New-York daily tribune. [volume] (New-York [N.Y.]) 1842-1866, 1853-08-03
PAPERS and Abstracts of Papers Read before the
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Ab,hcct ofa Communication on he IHes - ~ We,tyn
Coast Of the Lnid Suites. Tifs If San FCaHct'c1 EHt
forHt1. BY A ID. BAcHE, Superintendent L D Coast
ON the Atlantic ulf and Pacific Coast Of the United
States III are three quite different IT the problem
Of the Tides ON the At snc the durnal inequality u well
marked both in interval and hight mu ih better 50 than
those the COadof Europe requires large and care
fully made Obsery atoms the Laws Of The phenomsna
On the Cult e Mexico west OF 1t Georges Island the
semi ournsl Tides nearly disappear. On the Western
Coast there two Tides each gay out tue dlurnh III
equality Is very large.
III, study Of tn. Tidal phenomena then very important
10 Navigation for in san Francisco Bay rock "h'h mas
"a Eel water on il At the morning high water may oe
asG At high wAr At the afternoon Charts which ar- re-
above the surface th- ordinary gay 10 mean o~ water
will accurate Significance the Standings beings
sb- average at eher low water the day Of
IT, observations now discussed made under the
direction Of 1t Com. Alden. L. ; \ Assistant 10 the
Coast Survey, in January l-32 and January soJ Ih-y
were ade hourly except the time Of high and 10"
water the period oi mean attempted To dettrDlns
With precision The reductions ~ -5! were 'de oy mr.
" " Gordon those OF 1883 by M-ssrs FAr1st, Nit hill
and Heaop OF the lid party az the Coast survey Oh;e
Diagrams representing the daily cury. OF ths rise ana
fall Of the tides were shown These tides oo"oly present
Of large ournsl uequAlny IN night Shlca y Al
maximum for both high aud log water when ths Moon
| decliDsliou Is maximum, and minimum "heh IL Is Al
zero The inequality Of interval amounts when grrst"sI
hours for high water and more tnan an hour Tor
water.
TIE results for the hat monthly iqusHy, both in time
ard hight and # high and lO~ water, are remarkably
regular considering thr small number ct observations USED
a. obtain them TIE constants may therefore wih toera
bic accuracy be derived from them The m-sn luneulA
interval il 2h O5m. and corresponds 20 hours of the
Moons aye the Tides therefore belong % the next pre-
cedg transit Of Moon and not 20 the hd preceding
a. found by Mr. Lubbock for the Coast Ot Great Britain
Diagrams serve snow the comparison OF theory and %
servstiOn in the results for the hall monthly ineql4y
The necessity fr remembering that both seres 81 lhss-
Tides observed in the same month OF consecutive
YEAR in using them firm prediction tables Was noticed
The dturHqi In-yuDiHy, IS Oh aimed ny the ordinary
method given aud compared with theory the re-
suits OF the tables being illustrated by diagrams
The inequalities IN interval Of high wa'-r and IN the
hight of Low shs~n to increase spgsth-r and
for the nfqIie, IN the night OF high water and In n
isvs OF lev water The hrsi have the same sign As the
| moons dec lnanon
The inequality in the hight Of Low water is in general
greater than that Of high -sier exceeding Il When At the
the rates Of two 10 one nearly lae same ratio
nearly between the greatest inequality III interval Of
hal water. CON pared with that Of low
The ferns OF daily curves, and the pecusrites Of the
daily inequalities, may al BE- explained ~h numerical pre-
cein BY the nt.rer, nee Of diurn- wave following the
semi diBrDs the distance Of hours and half IN
the part OF the lunAOn where thai di-rence nearly COO
slant Tbs We Illustrated by diagrams Tue olurnsl Inc
quality gb sho % Olw approximately the lac
of the size If tvice the moons declInstl n.
Wben the d-clDson is north The highe-t Of the
two high waters Of the d.y IS The which occurs aoO1
twelve hours after upper elimination.
A tide table appended 10 the paper and reference
To- The ~ published me tOAst
Office founded these Observ .i0ns nt-nd- Tor uavlgs
tors ana containing technical terms not familiar u then
Note, on tie ptuen, Of 5o,to # tAe brought up
the rtcent eorofioH ~ The mi Str,qn IL e0sHscts0'
Nth ne Coat >Hfry. x, L. F. POCRTALls, As-!s,
Presented by pr'f BAcHE, supt.
Al the request Of the Superintendent Of the Coat Sur
Mr. PourtAs examine the specimens of thu bottom
OF the obtained by .aundings made by Il Cr.vea
Assistant Coast Survey from thirteen different 10
cali'i,- the x e snd IN ths Gulf Stream OF III
eastern coast q TIE P-un-uisr Of Florida Toe position
were from lat - q. IL min g. lst 30 deg 50 miQ aa
from lon % deg - 70 lon = -eg a min and r III
c-pihs vsryiIs from Il 20 1850 fshOms Mr. PJut al
describes muuit the character Of the specimens and ~
organic booie- Contained in them The sane framn-ra
uhich be had found h- Specimens rth If .pe lieu
opep REQUIRED th.-e Among rl-se Glpb-yerina
! Kotslua cutr4tA OrbuuA universe I-1tilara turbo s.
steciueu from 600 fAft wholly snAbe in 4cld.
small shells also found and frAgu Of shells al
OF the sh. Of Gran, the spcu OF sOOng-. mixed cit
desd corals snd little .Itiou- sand &c TIE ssec Zen
from 90 fsfhous insisted almost entirely # fJrAnin
fra ana other animal remains Including piece II ars
ga.iero pod shich Mr. Portals discusses n
auction whether those suu ais lived the depths wher
l.y were found washed from tn 40 .c-nt reef
suo con ud.s that th-r existence large nun b-rs
greater depths than those heretofore admitted must
row cou-d- I'd probable Mr. Pur,1is concludes BY r
mari ing the imp,risnc Of the knowl-dye Of the habits
and distribution OF the for. m'niferR to geoogs.s
Di.fritun0n IF Prec.plfan.n ~ Ram ant S.s o. n
korh An4nse1E C0anasAL By Loan BLoDGET,
" q bItlfon
The most striking results Of ths discu. sion Of the o.