New-York daily tribune., 1851-08-27
were adopled UNANIMOUSLY
SIXTH DAY.
ALBANY. SatuI


The Convention assembled this morning
IN general session. and considerable amount Of
business was accomplished.
The Committee on the Microscopes of Mr.. Spencer
reported, through Prof BAILEY, of WesI-Pon,, that
the instruments were wholly unriyalcd.
\ number of other Committees reported, but the
proceedings Of The day demand attention, and less
important matters must give place.
The fret paper IL the Section OF Mathematics and
PHYSICS was by Prof BACHE. on some further re-
suits of the Coast Survey The observations were
made near Key West, Florida
NOTES ON THE TIDES OBSERVED AT SAND
kEl, IN THE VICINITY OF kEl WEST,
FLORIDA,
Hourly observations OF the tides near hey West
FLORIDA, were commenced under instructions from
ne, and the immediate direction OF Lieut. John Rod
gers, 1. : n. assistant IN the coast survey IN Janu
Any last The results arc OF great interest IN refer
10 the general subject of the tides IN the Gulf Of
MeNco. The observations up 70 June have been
plotted On diagrams. and IN the course of reduc
uon. To show their peculiar features, have pre-
sented III diagram the of tides observed ~ or
near the maximum OF the Moons dec!lnatlOn 1t
syXpy and QuadTalure, and near the zero OF decllnd
uon and syzieies
1t VIII be seen that there are two high and two low
waters daily al hey WoSt,-the successive tides be-
ing nearly oqual-at or near the time OF the Moons
passing the Equator and there being one small tide
and one larger at other periods making the dlurna
inequality very remarkable feature Of the tides.
mo, on examining these III the way done for the
uCeS al al Island, louisiana that the results may
be represented by the interference Of a semIdumal
tide wave the latter being approximately nine or
tweny-one hours IN advance OF the former IN the po-
Slilcn OF It's maximum ordinate. as has already been
shown iOf the tides al the other localities
propose al future meeting 10 present the discus
SION % the tides to the Association, and al present
feier 10 the tables and diagrams showing the decom-
position OF the curve of observation. and the agree
ment Of the curve computed from the elements with
tie curves Of obseU alton. The average difference
II the computed and observed ordnates less than
four hundTeCths of a foot.
The paper illustrated by diagrams, showing
he tidal curves.
Prot. CHAs. ". HAoKLEY Of Columbia College,
mace some remarks oil the Proper Geometrlca
Form Of the N0.d-Bcord 0f the Plotr showing that
the share must be long and be capable Of throwing
over The tuTOw neatly.
communication Of much interest. on The ana. %
siss bduen me Senses of >igtt and T0loh, was made
~ Prof sTErHEN ALEXANDER OF Punceton. ENpe-
rimtnts with books and other small objects were
shown. proving that the sensation peTcelycd By the
comparison oi the DIumal Law OF the Mean
irTtetGr FuctuGfon of he Magnetic Elements al the
Toronto Observatory and others IL North America.
was mace by Capt LEFROY VI Toronto. The paper
was long ana mathematical would not interest
the general reader
Some interesting results Of observations on the
tgects or on on Water, were communicated by Prof
hoRsfoRD. The paper was entitled The Occur
renee OF placid water IN the midst OF large areas
NHtft waves are constantly IFeaklDC." The O1stT-
vators mentioned were made al the Eastern end of
Long Island. Half pint Of OIL thrown upon waves
breaking FIVE feet nigh, s,llled ,hem and prevented
the formation Of whlie-caps'
Several members cCrro5oraied the occurrence OF
facts OF this nature.
Annexed Is copy OF the paper Of Prof Hons
FoRD on the Cause OF Sohdihcaiion OF the Rocks Of
Florida Reef, read a. the Troy Session Oh THURSDAY
L. conclusions Will be found interesting:
TIE SOLlDIFICATION or THE ROCK OF
THE FLORIDA REEFS
PROP EoRsFoRD, Or HARVARD
II : required 10 ascertain 5y what processes
chemical or mechanical. or both chemical and me
chanlcal the surface and the submerged rocks have
become hardened
BY the surface rocks Is intended that thiu brown
crust. composed OF numerous LAYERS which 5 dis
uneuished by great compaciness, and a peculiar
Tng. when. IN detached conclton, =, Is struck bv
hammer, and which occurs on the a5rlut ocean
see ano more atuncanily Oh the long souts on the
land side OF the News.
BY The submerged rock : INTENDED the rock Of
ooltc appearance which has Solidlhec under water
anc "hich l. of superior hardness 10 the surface
rCCk
Ihe surface rcck. called has IN r-any nlarfs M
lor.tr ne ouiermost position. though IL fa5 AZ TIE
IN. oI - i-TU1iiCD. l. Is indeed lrfer .--s-... =.
~uh Unable ighr-coiorcd limestone Tne eD-,fst
NcNa the Circumstance ci .'s formation. rc. j,
Trtstr- rGs!'