HDTenEightyP/NetNews huggingface dataset:
From: ray@tsw.UUCP (Ray Izumi)
Newsgroups: rec.scuba
Subject: Re: Prescription Mask
Keywords: lense popped off
Date: 29 Sep 92 15:10:25 GMT
Organization: The System Works, Redmond, WA

This has nothing to do with your "sticky" problem, but I thought I'd just
throw in my experience with prescription masks. I've seen many problems with
the kind of mask where you glue in lenses, mostly similar to your problem.
But there are other problems, such as inaccurate inter-pupillary distances
and other problems of alignment and orientation that can cause blinding
headaches.

I myself have never used anything else but the off-the-shelf lenses provided
by mask manufacturers, e.g. Tabata and Dacor. These come in half-diopter
increments and don't correct for astigmatism. But apparently astigmatism
doesn't matter as much underwater, and the half-diopter limitation seems to
be close enough for all practical purposes.

I've had no complaints whatsoever with these masks (I have two different
brands, each one quite satisfactory); this from someone with severe
astigmatism and -7.0 diopter myopia. Check them out next time you buy a
mask, and probably yourself lots of $$$ too.

-- 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Ray Izumi, The System Works, Redmond, WA     206-823-4685      uunet!tsw!ray
"No amount of not finding something proves it doesn't exist."
Newsgroups: rec.scuba
From: lippsjj@ucunix.san.uc.edu (John J Lipps)
Subject: Grand Cayman Trip
Organization: University of Cincinnati
Distribution: usa
Date: Thu, 1 Oct 1992 23:05:45 GMT


   A hassle-free Caribbean vacation in Grand Cayman B. W. I. .
   Stay at the Coconut Harbor Hotel on Seven Mile Beach.
   Package includes round trip air from Cincinnati Ohio, lodging a
   "breakfast only plan", six days of diving (unlimited off-shore diving).



     DEPART CINCINNATI     SUNDAY, DECEMBER 6
     RETURN CINCINNATI     SUNDAY, DECEMBER 13
     COST FOR DIVER        $1175.00
     NON-DIVER             $829.00

     DURATION              8 DAYS 7 NIGHTS

     DEPOSIT ASAP          $300.00
     BALANCE DUE           OCTOBER 30TH, 1992
    CALL BARBARA  513-752-7681

    A CERTIFIED PADI INSTRUCTORS WILL BE ON THE TRIP TO GUIDE.

Newsgroups: rec.scuba
From: ron@etch-eshop.Berkeley.EDU (Ronald Viegelahn)
Subject: Prescription mask lens glue
Reply-To: ron@etch-eshop.Berkeley.EDU (Ronald Viegelahn)
Organization: University of California, Berkeley
Distribution: usa
Date: Tue, 29 Sep 1992 15:07:19 GMT

 E-mail bounced... so I'll just post it 

 Hi Janice

 I just read your post asking about prescription mask lens glue.

I to had to get a presciption mask. Although I'm not positive of
the following info, I have heard it from a number of people.

 There held on with a glue that is * VERY * thin in viscosity and
is " cured " with an ultraviolet light source. You should be able 
to find it at a good optometry clinic, or maybe a place that fix's
cracks in auto windshields.

                                     Goodluck

                                     Ron Viegelahn

                                     ron@etcheshop.Berkeley.EDU
  
Newsgroups: rec.scuba
From: 6845400@LMSC5.IS.LMSC.LOCKHEED.COM
Subject: What about Chronosport Watches?
Organization: Lockheed Missiles & Space Company, Inc.
Date: Wed, 30 Sep 92 15:23:04 GMT

I just received a Chronosport (womens) for a birthday present.  To me it looks
very much like a Rolex, doesanyone have an opinion on it?

Thanks,

Kathy
From: tjfeue@bb1t.monsanto.com
Newsgroups: rec.scuba
Subject: Singapore
Date: 2 Oct 92 12:33:04 CST
Organization: Monsanto Company, St. Louis, MO

Has anyone been there?  Anyone been diveing there?  Living there now?

Ted Feuerbach - Scientific Systems Consultant
Disclaimer:  Monsanto didn't say this, I did.

Newsgroups: rec.scuba
From: gbrown@kean.ucs.mun.ca
Subject: balls and money
Organization: Memorial University. St.John's Nfld, Canada
Date: Wed, 30 Sep 1992 16:36:46 GMT

With respect to the idea of diving on a golfcourse to recover golf balls, 
yes there is money (a quite a lot of it) in this.  Many years ago, I worked 
as a grounds keeper at the HighWood Golf and Country Club (High River, 
Alberta,home of Canada's 16th prime minister).  Myself and a co-worker used 
to dive on the many water hazards (mostly with just a snorkel) and gather 
whatever we found.  After a quick wash and sorting we would pack them into 
plastic bags and sell them in the pro-shop for between 2.50$ to 5.00$ for a 
bag of 10 (depending on brand and condition).  We made a deal with a number 
of other courses in the area to place the balls in their pro-shops as well. 
With a little wit and a lot of effort, we made enough $$ to help pay for 
our undergraduate degrees.  We did this for two summers and as far as I 
know, some of the university students who work as grounds crew at HighWood 
still do this.

cheers,

GRANT E BROWN, PhD
OCEAN SCIENCES CENTRE
MEMORIAL UNIVERSITY OF NEWFOUNDLAND
ST.JOHN'S, NEWFOUNDLAND, CANDADA
A1C 5S7
"gbrown@kean.ucs.mun.ca"

Newsgroups: rec.scuba
From: andre@broccoli.bae.bellcore.com (Andre Cosma)
Subject: Diving in Costa Rica (Guanacaste)
Organization: Bellcore
Date: Mon, 5 Oct 92 17:37:56 GMT

Hello Netters,

I am looking for info on diving in Costa Rica, namely the Guanacaste 
region. I am interested in both the quality of the dive shop(s) (DMs,
rental equipment, etc) as well as diving conditions (water temps,
marine life, sights, etc). My search in the Ames scuba archive did not
produce any results. Please send email to andre@bae.bellcore.com. I
will summarize any replies and post if there is sufficient interest.

Thanks a bunch,

-- 
Andre Cosma
Newsgroups: rec.scuba
From: IBORSET@bg1.hbg.hydro.no (BRSET IVAR ARNE)
Subject: Divecomputers and temperature
Organization: Norsk Hydro F-senter , Norway
Date: Wed, 30 Sep 92 11:25:04 GMT
X-News-Reader: VMS NEWS 1.11

Hi there.

I got a question from a friend of mine the other day that at the time seemed
interesting.  

First of all, is there any reliable research that shows if there is a
connection between temperature (water and surface) and RNT ?  In case there is,
does anyone know if any of the computers currenctly on the market take this
into account when calculating bottom time in general, and bottom time for
repeated dives in particcular ?

The reason that I am asking, is that I do most of my diving on the coast of
Norway.  And, as a lot of you probably know, the water here is not quite as
warm and comfortable as the Keys or Bahamas. (but there is still a lot to 
see....   ;-)

Thanks,
	Ivar
	iborset@bg.hbg.hydro.no


Xref: sparky rec.scuba:5310 rec.photo:17080
From: ray@tsw.UUCP (Ray Izumi)
Newsgroups: rec.scuba,rec.photo
Subject: Dual TTL Strobes on Nikonos V
Keywords: Nikonos, TTL, strobe
Date: 29 Sep 92 20:05:30 GMT
Followup-To: poster
Organization: The System Works, Redmond, WA


This is a question for the photographers:

I have an Ikelite 150 and a See & Sea YS50, both of which are TTL strobes.
Mechanically, I can connect them to a Nikonos V camera with a dual TTL
cable. Electronically, I wonder about the wisdom of this. I'm not so much
concerned as to whether or not it will work, but rather if the use of the
two strobes will burn out the Nikonos V electronics. Apparently Nikon does
support such usage with their own SB102 and SB102 strobes, but I was
wondering if anybody in netland has had any actual experience (good or
bad) with such a setup, i.e. using non-Nikon strobes in dual TTL mode.

A related question is: can using ni-cad C and D cells in these strobes
also damage any electronics?

-- 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Ray Izumi, The System Works, Redmond, WA     206-823-4685      uunet!tsw!ray
"No amount of not finding something proves it doesn't exist."
From: story@sgi.com (David (Duis) Story)
Newsgroups: rec.scuba
Subject: Re: How about the Oceanic Datamax?
Date: 2 Oct 92 00:32:30 GMT
Organization: Silicon Graphics, Inc.

In article <KEVIN.92Sep21155456@polkacide.tamri.com> kevin@tamri.com writes:
>
>  My computer's failure mode
>wouldn't have killed me.  It may have meant discontinuing diving for
>the day and switching to a different computer or my depth gauge for
>the rest of the trip.  Losing the maximum depth alone wouldn't kill
>me.  However, I wonder whether the DataMax could lose track of
>nitrogen instead of just maximum depth.  

I would assume so, since it should be reporting the same number it is
using for its calculations.  

And might I point out that "switching to a different computer"
mid-week is a serious offense against the models: it generally isn't
wise to arbitrarily reset your theoretical compartment loadings to
zero when your body is still loaded.  

> I might never discover the
>problem, unless my dive plan suggested number substantially different
>from that of my dive buddy (assuming I used the same dive buddy for
>each dive).  Even if I were bent, it would difficult to prove that the
>computer were at fault.  I could be one of those who gets bent even
>within the bounds of the dive computer.

This is an interesting train of thought.  I hadn't thought of that.  I
wonder if any of these cases have been tested -- I doubt anyone
performs accuracy tests on the computers of those who have been bent.

>For what it's worth, I called the Oceanic rep again.  She claimed that
>Oceanic has changed battery vendors and software since.  Originally
>Oceanic expected a 3-5% battery failure rate, now they presumably have
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>  But again, there was no indication of battery
>failure, only incorrect maximum depth indications.  I didn't have the
>Datamax serviced on the suggested schedule, but the failure mode was
>worse than I would expect.

Yow!  This is far, far worse a rate than I would tolerate, given the
manner in which these computers obviously can fail: inaccurate depth
readings and hence inaccurate decompression information.

>I plan to report this to _Undercurrents_ and see if they want to look
>into the incident.

Good plan.  This is interesting stuff.  Let us know what you find out.

Cheers,

David Story                        NAUI AI Z9588, PADI DM 43922, EMT
story@bent.wpd.sgi.com		  Better diving through computers.
Newsgroups: rec.scuba
From: craig@cattnts.canada.ncr.com (Craig Campbell)
Subject: Deep Diving Record
Organization: AT&T / NCR Canada Ltd., Toronto, Canada
Date: Tue, 29 Sep 1992 12:00:20 GMT


In the latest issue of Sources (Naui member publication), there is an article
on deep diving.  In this article the author references, and criticises,
someone from Florida who apparently holds the deepest dive on air record, 
as well as being a founder (?) of something called the 40 fathom club.

Now, the author criticises freely, without giving any details with which
to form an intelligent opinion.  (From memory) The author states that this
diver has a description of his record setting dive posted all over his dive
shop.  If anyone has this description, I would like to hear it.  I find it
difficult to believe that no precautions were taken with this dive, and
suspect that much preparation and training was involved.

It seemed to me that the author was a little too righteous, so I thought I'd
try to find some facts.  Anyone?

craig

-- 
Craig Campbell		|	These opinions are entirely the result of a 
Systems Engineer	|	small butterfly crashing into the far side
NCR Canada,		|	of the planet.  Chaos Rules.
an AT&T Company		|	I speak for no one, except, possibly, myself.
From: ka1gt@cbnewsm.cb.att.com (robert.m.atkins)
Newsgroups: rec.birds
Subject: Cape May info wanted
Date: 28 Sep 92 17:58:08 GMT
Distribution: nj
Organization: AT&T

I would like to get some info on birding at Cape May. Specifically answers
to such questions as:
1 - The best times to visit, during October. Is it better to visit duing
the week, rather than at weekends to avoid crowds. Dawn vs. Dusk vs daytime
observations. Are any particular weather conditions likely to increase the
number of birds present?
2 - Is "Cape May" just one site, or are there many viewing areas. Are there
blinds, or is all viewing done out in the open? Is a 500mm lens long enough
to get respectable photos of at least some of the species present?
3 - Is there any low cost lodging in the area, or perhaps up around
Wildwood, in October, or do most of the motels shut down after the summer
season?

I realise these are somewhat sweeping questions, but I'd like to plan a
visit to Cape May with friends sometime next month and any info on the area
would be very welcome. I restricted distribution on this message to NJ, so
appologies for wasted bandwidth if it gets out further!

===============================================================
Bob Atkins  AT&T Bell Labs  email (direct)  att!clockwise!rma
===============================================================
From: drintoul@matt.ksu.ksu.edu (David A Rintoul)
Newsgroups: rec.birds
Subject: house finches (Was: should I keep feeding birds)
Date: 27 Sep 92 14:00:55 GMT
Organization: Kansas State University
NNTP-Posting-Host: matt.ksu.ksu.edu

jclarke@teal.csn.org (J Christopher Clarke) writes:

>	Which leads me to this quesiton: What is the recent thought on the 
>classification of east and west House Finches.  The last thing I had heard 
>was that the eastern group had met the western group in Kansas in 1990 and 
>were interbreeding.  Any further word on this topic?

Nope.  As far as I know, no one is studying it.  Any interested
grad students out there?  Not that it would be easy; despite 
the observation that Colorado HOFIs stretch their necks out longer,
I don't know any good way to tell the two populations apart.  The
conclusion that the eastern and western populations met near here 
was based solely on historical data (finches to the east moving
west, finches to the west moving east etc.).  Any other clues
about eastern vs western distinctions would be helpful.




-- 
Dave Rintoul            Internet: drintoul@matt.ksu.ksu.edu
Biology Division - KSU     Latitude 39.18, Longitude -96.34
Manhattan KS 66506-4901                         TCN: id2418
(913)-532-5832 or 6663                  FAX: (913)-532-6653
Newsgroups: rec.birds
From: andrewt@watson.ibm.com (Andrew Taylor)
Subject: Peregrine Diet
Date: Sat, 26 Sep 1992 15:29:11 GMT
Disclaimer: This posting represents the poster's views, not necessarily those of IBM
Organization: IBM T.J. Watson Research Center

In article <1992Sep26.002147.8859@u.washington.edu>
toby@milton.u.washington.edu (Toby Bradshaw) writes:
>Marsh nesting birds are generally not preyed upon by wild
>peregrines in natural habitats.  Certainly Brigantine's
>avifauna never had such a predator in summer.

The first statements is nonsense. An old name for Peregrines was Duck Huck.
Some Australian Peregrines take almost exclusively marsh birds such as Coots
and Grebes. I know little of US birds but my National Geo. field guide says
"Peregrines inhabit open wetlands near cliffs; prey chiefly on ducks,
shorebirds, seabirds". The illustration shows a Peregrine sitting on a
Green-Winged Teal (which I've seen a Peregrine attempt to take).

Peregrines much prefer to nest on cliffs (which, from memory, Brigantine
doesn't have nearby) but they will use other sites, even nesting on the ground.
An area as rich in prey as Brigantine is where I would expect to find
Peregrines adopting less-favoured nest sites. Why wouldn't non-breeding birds
formerly have spent summer at Brigantine?

Andrew Taylor
From: toby@milton.u.washington.edu (Toby Bradshaw)
Newsgroups: rec.birds
Subject: Re: Peregrine Diet
Date: 28 Sep 92 14:47:32 GMT
Article-I.D.: u.1992Sep28.144732.17017
Organization: University of Washington, Seattle

In article <1992Sep28.034515.17751@watson.ibm.com> andrewt@watson.ibm.com (Andrew Taylor) writes:
>In article <1992Sep27.202910.4380@u.washington.edu>
>toby@milton.u.washington.edu (Toby Bradshaw) writes:
>>I'll bet there is no record of ground-nesting in peregrines south
>>of the high arctic, and very few from there.  Provide some reference
>>for your statement, please.
>
>The records I've seen come from inland Australia where cliffs can be scarce and
>a significant fraction of the world's Peregrines live. My library is at
>home in Australia, so I can't provide a specific reference.  If Peregrines
>did formerly breed near Brigantine I would expect they used abandoned nests,
>perhaps of Ospreys.

How much terrain relief is there near the ground nests?  I've seen
peregrines nest under tree roots, so after a fashion they're
on the ground; but, the terrain falls away abruptly under the
nest.  This is for Peale's peregrine in the Queen Charlotte's.
I haven't seen any peregrine eyries in trees, but they
have been found in N.A. around Reelfoot Lake, I believe.
The highest density of breeding peregrines is supposed to
be in the British Isles, but I don't know how the absolute
numbers of peregrines are distributed by country.

>>Ask U.S. posters how many peregrines were working the marshes
>>at Brigantine in summer prior to peregrine reintroductions.
>
>Actually I was hoping knowledgeable rec.birder would post the historical
>Peregrine breeding records (if any) for New Jersey. While I'm asking
>maybe someone can answer two more questions. Did the decline of Peregrine's
>in the NE US begin with DDT in the 40s or did it start earlier. Also which
>subspecies were used in the captive breeding program?

I doubt there are any breeding records for NJ peregrines.  The
anatum peregrines found east of the Rockies were always rare,
though nest site fidelity made them easy to find.

Toby Bradshaw
Department of Biochemistry and College of Forest Resources
University of Washington, Seattle
toby@u.washington.edu
Xref: sparky rec.birds:1677 ont.general:1829 can.general:4736 tor.general:1307 misc.headlines:6459 soc.misc:1006 soc.women:17299
From: ray@philmtl.philips.ca (Ray Dunn)
Newsgroups: rec.birds,ont.general,can.general,tor.general,misc.headlines,rec.skuba,soc.misc,soc.women
Subject: Re: Beluga whales at Shedd/Trapping of hawks
Date: 2 Oct 92 03:24:26 GMT
Article-I.D.: philmtl.1992Oct2.032426.13728
Organization: On the Brew.

In referenced article, r0th@midway.uchicago.edu (Samuel Conway) writes:
>The people
>who are screaming so loudly about the Shedd's "exploitation" of their
>residents have likely not ever seen the presentations.  I have, and they
>are not in the slightest bit exploitative.  To the contrary, they are very
>educational and particularly inspiring.  I was tremendously impressed.  The
>transport of the whales to Shedd was not to make them some "zoo attraction".

I'm far from being a conservation nut, but I can't let these statements go
past without comment.

A "zoo attraction" is exactly what they are.  They are on display there as
a paid for attraction.  Shedd themselves admit they are there because it is
necessary for the public to view them.  Yes, they do say this is to
sensitize the public to the issues, but it is still a fact that whales are
being held in captivity and put on public view.

Whether the setting is impressive, inspiring, or just a tank on the back of
a trailer, the exploitation is just the same.  The _conditions_ under which
the whales are being kept might be better, but they are still being held in
captivity for exploitative purposes.

Argue if you must that the captivity is a means to a necessary end, that
they're being exploited for the general good of their species, or even that
it's silly to worry about a dumb fish, but don't give us this.

Here in Montreal, the ex-olympic velodrome has been turned into a
pseudo-zoo, the Biodome, with four large environments areas - tropical
forest, Laurentian Mountains, St. Lawrence estuary and artic.

Like Dr. Conway with the Shedd, I found much of the Biodome very
impressive, and would even recommend a visit, but let's not kid ourselves
that the monkeys, birds, otters, beavers etc. are better off than in the
wild, or that the belugas they propose to put in their St.  Lawrence tank
will not be exploited.
-- 
Ray Dunn at home    |    ray@philmtl.philips.ca    |    (514) 630 3749
From: Joe.Morlan@f501.n914.z8.rbbs-net.ORG (Joe Morlan)
Newsgroups: rec.birds
Subject: Re: Peregrine Diet
Date: 4 Oct 92 02:58:00 GMT


      ***** On 10-03-1992, Toby Bradshaw wrote to All *****

TB> Anything's possible, but "DDT-resistant population"?  I
TB> don't think so.  The heritability of "resistance" to DDT is
TB> unknown, and the selection intensity is unknown, too.  Both
TB> these factors must be known to calculate the genetic gain in
TB> "resistance".

I have seen no genetic studies to support either my contention or
yours. However, during the DDT era, there were many nesting
Peregrine pairs which hatched young successfully while others
failed. Many of those "successful" young were lost to poaching.
If these Peregrines possessed a trait which made them relatively
immune to DDT, it seems logical that trait would be passed on
through natural selection.

An interesting bit of data from the recovery effort in California
is that there has been no significant increase in average
eggshell thickness since the banning of DDT.  Peregrine eggs are
as thin-shelled now as they were in the late 60's.  I suspect
these birds are picking up DDT on their wintering grounds in
Middle America.  Perhaps the birds currently breeding in
California have developed some resistance to DDT.

TB> I'd like to see a citation for any evidence that there is
TB> even genetic variation among peregrines for "resistance".
TB> Can you provide one?

Not at all.  My message was strictly speculation.  Take it with a
grain of salt if you like.  But I think it is logical that traits
which promote survival or reproductive success are passed on to
future generations.  Isn't that what evolution is all about?

TB> Isn't it Hickey?

Yes.  A typo on my part.  Thanks for the correction.

--Joe Morlan, Albany, CA
Joe.Morlan@f28.n125.z1.fidonet.org.

 * Origin: SeaHunt BBS, San Francisco (415-431-0473) (8:914/501)
Newsgroups: rec.birds
From: jclarke@teal.csn.org (J Christopher Clarke)
Subject: Re: Should I keep feeding birds?
Organization: Colorado SuperNet, Inc.
Date: Sun, 27 Sep 1992 05:58:02 GMT

	There sometimes is the worry about feeding birds and then stopping.
I started feeding birds in Monmouth County, NJ at the ripe old age of 8.  
For the 10 years, I fed the cardinals, blue jays and other varied seed-eater
s th with a similar worry.  During that time I decided to see just how many
people were feeding birds.  In my relatively open development, almost 50%
of all houses had active feeding programs at any given time. The result: if
your area meets similiar population densities, then you don't have to really
worry: someone is always feeding. 
	The only concern that I would have would be if I were feeding fruit
to softbill birds such as Northern Orioles and Myrtle (Yellow-rumped ?)
Warblers.  There you could have a problem, but since the climate of NJ is
really benign, I wouldn't worry.
	On another note, I have an interesting observation.  I recently moved
to Colorado, and began feeding birds.  After a rather long wait of about a 
week for any activity, House Finches, my favorite, showed.  However, unlike
the east coast birds, these seem to a distictly longer neck, with more 
of a Fancy canary neck behavior, i.e. streching it out often.  It is quite
a physiological and behaviorial change compared to the e.c. birds.  
	Which leads me to this quesiton: What is the recent thought on the 
classification of east and west House Finches.  The last thing I had heard 
was that the eastern group had met the western group in Kansas in 1990 and 
were interbreeding.  Any further word on this topic?

Thanks

J. Christopher Clarke
jclarke@teal.csn.org
       @taf.atmos.colostate.edu

Newsgroups: rec.birds