The New York herald. [volume] (New York [N.Y.]) 1840-1920, 1856-08-25

d dnn wave q Indicated BY three hours Is 40
OF the durnal wave with very characteristic Pc
e cur From the line Of deep water Joining
Inc rrtngas ana Southwest Pass at abe
trance Of the Mississippi wave re aches
me saW ps on be western coast Of the Florida pennsu
IN this order from south W and west, Tue move
ment west Of St. Georges appears be in the OTTER 90
Pensacola, Fort Morgan and Cat Island while Ivr The
diurnal wave Cat Island Fort Morgan Pensacola.
To the westward Of Southwest Pass there Is sudden In
crease Of establishment, IL another dornar xayo
Drought The des there The cotdal hour fy
sections west Of Southwest Pass 20 b. while mat os
Southwest Pass and three of Ia 10 b. II differ
ence OF about fou- hours This taken with the remarks al
ready made IN regard 70 the appearance OF two high wa
tiers IN the curves for Isle Dernier and Cacasea, ipcatr
asysem Of nterferences yet to be unravefed. As
the case with the dlurnai wave the stations at lss Der
pier and Cacasea gave codal hours very like those
Brazos Santiago and Arkansas, and Galveston later
The differences between the cotdal hours Tor the
diurnal and seEai diurna tides shown in a LAbie.
The grouping OF thu semi durpa reeus "a next made
and the ults tabu ated and drawn diagram map
This map also sbows the coda lines deduced. The
tidal lines Of thirteen and fourteen hours only appear
well marked, Egmont Key (Tsmps), and passes
around the shore OF the great bay between Louisiana
eighteen hours at the head OF the heights between g.
Georges and Cedar Keys, and seventeen in that
Cat Island the lines Of sixteen and twenty have
suce eeded each other closely IN the bay the westward
In comparing the two sets Of cotidal lines for the
durral and semi diurna waves, we find . general
resemblance in the great bay between the west
coast Of Florida and the eastern coast OF Loui-
tide on the eastern side Of the bay CORES condinc
generally with III, II and is OF the semdiusnl tides
and 70 and 70 hours Of the durna tide tho western
sde OF TIE bay corresponding generally 70 10 and II Of
the semi diurnal On the southern OF Florida by
the Keys on the contrary the lines Of 49, 2o 2 q and
~ hours succeed each other rapidly between Cape For
da and the Tortngas In the durn seres along
shores in the sem ciurnal tide. On the CONTRARY
hours only at consid rabe distances The dur
nal sys,en while 49, H. 49, ~ 20 and q occur IN the
tiago in the same diurnaI tie.
The section then adjourned.
ON THE PARAuEiIsM or ROCK FORMATIONS SCOTIA,
WITH THOSE AMEKIcA BY PROF oawsos
OF M'ClI COLLEGE, MoNTREAI-KEAD BEFORE AssouA-
n0s AuG. Il, 1858.
The author stated that was his intention 10 give
sketch Of the aest state Of Information respecting the
sequence Of formations this part America with the
view OF eicng comparisons with rocks Of similar age
other parts OF the continent He first noticed the evidence
OF recent subsistence OF the anf TO tho Of 80
feet or more afforded by beds OF stunlpe OF pine and
beech IN stu observed at low tide in the Bay Of Frndy,
and Connected this appearance h similar evidences
modern subsistence In other parts of the east coat Of
America.
marking that 1t consists Of two MEMBERS liner
or boulder, clay resting in places ancient
quenty on sraea and polished rock surfaces and an
upper or gravel deposit marking the action of the
the land, when being elevated above the waters which
had covered IT in The boulder period. The most impor-
tant fact however In reatio 70 the boulder formation 10
Nova SCOTIA was that showed by
ce, not tn one bot in various dirocops depending on
the existing features Of the surface. O this many exam
pies were gwen
The next formation observed in Nova Scotia Is q red
sandstone and trap deposit known overlie the coal
bearing rocks sud to belong TO the mesozoc period OF
geoiognH, but OF uncertain age Perhaps the
existing evidence tends towards Peruvian date.
Ihe most important of all the formations Nova SOP
Ia is the great carbonerous system, which noticed
IN e several upper coal measures the
productive coal measures the mills lone gut. the liner
marine limestone gypsum and red sandstone and 0 snl
lower nseuco coal form alton. Particular stress was
laid On 'ne local differences impressed the rocks
OF Nova Scotia by the existing features Of The
Try, aud on the connection o. these with similar differ
ences observed on larger scale in the great co areas
OF Inc tpned *aes. The peculiar circumstances which
may in Nova Scotia have led 70 preservation IA an
en- nsnt icee, Of erect fossil forests, ranmarks land
sne ADO bones and footprints Of baachaus, or saa-
MAJ ar se reptiles observed there also advertcd TO-
IT IT. cider than the cArsonerous per rod wera
az ds'u md In great part metamor phosed by erupr
Ions y and oths gneous rocks these disturb
Sna ad ~ ited the seabasins before the commencement
q nc rtonierous period. Owing these
ara Changes YVES difficult 10 ascertain the true age ana
relations OF these older rocks The author vas at work
o. ths subject, and uustei, with the aid of ProfsoP
HAL, soon 70 attain decisive results. Al present 4 ap-
peared that there were osserous rocks reaching from
ne Clinton 70 TIE Orhhapy series and older than thes
great series Of altered ossileroua quartz rocks
and saies with mica slate gneiss and granite which
might be OF lower siuran date. The author nvYtet
geoogsts present 10 state nd itona parallel
Ism Of divergence which might occur TO them.