New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1882-08-26

stiions of the Iroquois Indians. In the same Soc
ton two admirable papers were reau :"
Miss Alice C. Fletcher, who bravery 'o'N
ND her abode among our Western tribes 10 s'unS
their home life and remained for three years ;n -,
most intimate companiOnShip win ulehi' Sa,,,;I7
what no man could discover of their social lnu't 80
and religious habits one OF the papers 10 '
possess much ethnOloGical yaue.
COMMANDER BARTLETT on THE Gull >. IN c.,f
Commander Bartlett's discourse on '"o
Stream attracted mnch attention anu So''"'
pcciallv interesting to the eminent s'ran1''' NO.
Commando BARTLETT has been for some years lnvts-
tigating the stream in connection WI" '"' -.
survey and he fastened here without 'aAluH
,i.,o - nrcrore paner to give the results
of his latest work. In brief he showed
,bot tho Gnlf Stream does not flow ont OF the Uuii
No. II does NOT flow over bottom channeilcd WIN
ridges and valleys parallel with the AppaI dcn.lI
ev.fcm bnt that there is a wide p acau eNtehu'nt
along the coast from the Bermuda hanks ludt
the stream flowing over tins sweeps IL C''" ~ ~.
hard coral bottom: that beyond this the bolloh
slopes rapidly downward and Is o02y Win ne NhSn
from the plateau: that it Is not river of warm
water flowing over cold: that the Arctic cullelt u,
not run inside; and in short he breaks goo' NM
scientific idols pretty thoroughly. ne uhsclcuiaI
were glad TO know that a bottle of champagne sum
100 fathoms had no air space when wltndiiWl an
that a bottle sunk 1000 fathoms vas ta hfn W. -,
properly corkcd and WIRED but with hardly ''''0
Al the conclusion of the address l)r Carpenter
expressed his admiration OF me wofh mIu were
that II pleased him to know that the Ie>9Its VIZ
obtained with English instruments. 10 1mls Nun,
mander Bartlett replied that Hr Wllah llo,i' ~ ~
Gld invent an apparatus and kindly lofwliuIu II ~
the Coast survey but il wouldn't work lalikcc III
eenulty then invented an attachment MuiVh n''''u
il so efficient that sOundings oi oOVO !a'olno %
be made in thirty minutes ana W'nos u0"0S'
more than a tathOm from the perpendicular
REGULATING THE CUTTING OF SCREWS
protcssorJ b. Webb of Cornell University, read
paper on a method of cutting screws OF IncTea-ihs
pitch If we wish 10 cut an ordinary screw III
said in substance we can do ii by milling onl inc
groove instead of turning the screw IN iathe. 10
do this we mount tic blank screw in Journals an"
mount fixed pin to work IN Inc
groove after the manner OF nut 10 S''l'
the operation VIC must nave P'"'
Of the the thread commenced enough 10 rrach rom
fine milling cutter 10 the nut Alter TINS me screw
If rcvo!yed will feed itself along by scr wing p'n,
the nut or pin and the milling toot VIII h''P -"
cutting - screw of constant pltch. II now we VI
range the apparatus so that tins pm or nut hdS 4
feed dcpcndent on the revolution OF the scI'"'
" Ech causes this nut 10 increase ITS distance I"'
the milling cutter. then, instead oi sore" 81 con
stplit pltcn there will result ii SER" whose P''0"
viii increase in arithrnetical progression
PLANTATIONS OF THE EUCALYPTUS.
n,pcr entitled Experimental Plantations OF
the Trcalvpfus near Rome" was read by Franklin
= Houpb. Chief Of tho Forestry Division. Depart
mept Of Agriculture. Washington. ID. C.
The plantations described about three
miles from Rome Italy, and close
by tie spot where, according to tradition ~
Paul was beheadel. The locality has long been re-
rarlcd and Justly. o. a mo, unhealthy one So thai
fr,tn an I,portant go Vn il has DIV ndcd 10 slr2g
cling hamlet, callea, i;tingy. ir lomO.. he
500. Is Of volcano ir-n from ten 10 hitren iNfucs
deep. .,,i IcT lie. Below = Sub-olI 50 hdrd Us W.
i'e mpcne!rab!e by roofs. A, e.o'r1 oc.
Eucalyptus globulus was planted III lNoS,
and sanitary improvement ~ ne climate
was soon Observed that LATER, III 1913, a com
p4uy WAS formed ~ continue The Nork on large
scale the contract calling for the planting OF loo
trees each year. The r-e0iis now 1arIN eSia9lsh'H
are iuat the trees can there be cu Nacd successful
H. aud thai they to avery COu-dcrahl Attht pul-
is the ar and cOunteraci d:seas some NaiIaDIe d
tails were given concerning the YaIcfe9 pItntou'
the method OF planting ana the aCiOn OF the groves
TENSION OF THE LUMiNIFERGUs ETHER.
A paper on The Ten sion of Lumiuilerous Ether
wa, read by Dr. Valson Wood, of Hobokon, y. j.
lie spoke substantially As follows:
III order 10 oruc the tension Of the luniniierous
ether assume that in this the results OF PoIei's
experiments regard to solar radiation, which gave
I205O foot pounds mechanical power per cubic nile
per minute. Assuming that the stress IN
ether Is produced by the rond motion not OF
the material particles and That IL IoHo"s
he laws Of perfect gases the pressure being proper
toned TO the square of the actual velocity
Jointly TIE pressure OF TIE air at normal conditions IS
o,,ds pcT -duaIt inch, and the velocity ~ the par
ticcs IN producing this pressure ~ known 10 DE- nn'l
ZOO feet per second. WITH TINS dala ma NJ prom
pound avordupOIs per square mon a.,
puuulr i'UiCS the Iiopatlt
stress To be about 1000 5000 pound, 10 the ~ arc
nch he assumes that ule density vas tfn', =" t'a
o common ali The surface OF thc chrth, Milfu is '
loved 20 he ny TOO large. Dc dehsIy o.
oulv a very, very small fraction m n
pound inc weigh Of cubic foot bang on} ahoui l-IO
II fn,ind according the above oatt II is therefore
ma, bo ne density and stress OF the ether are
hlt lit lie more Than vanishing quantities.