New-York tribune., 1879-09-03

OF the Canada geological survey. recenns
published paper adop,ing tine tine auInS ntSers have
expressed themselves to the same erect ana 'ls Nc
decidedly gaming ground among eeo,pgs,s, & on Monp
taius is newer than the crysalnes of the sunml.s ~
demonstrated by the iaet th. en hroten M and The
fragments form "A glafcrafe nt the base VI -c pu
it, T,s localities frustrating this statement are
"nm,rous Similar statements have been made OF the
corresponding rocks all the way inronEn % s, " n'
a-ea The succession of formations is the same, first
crysailine second Potsdan Guartite thir1 caceIous
sand rocks and hmesones, fourth HUDSON hlver sihtr
fs no reason why the crystallines oi the Mldd
and southern statos, generally "anIt'e9 70 1S % m -,
F zoc ge should I've different from these OF tne 1rtel
Munniairs An idcg section from the Adlronuacks
10 Souhef n New Hampshire shows L1ureniian dipping
beneath Lake Champaign, nsna out nor renen!ng M tie
snrface urder the Greep Mountains and coming to view
in the coarseiy crystalline porphyrlhs gneiss t oi
southern NewIiampshire. The gnelss OF the
Green Mountains. therefore,. occupies place
between the Laurentian and the fo'sdam. ho- @
ferring 90 Professor Dana's views, the au-
thor stated that recent publications showed an APP
proxmation 10 agreement paba nuas III 20 v, a,vW
York the order OF srrangement as IN vermont, mont
thai Is orystalnss. Potsda iiinestohcs huusoh NeI
group AS tho rocks are csscnialy eonnnnon, ron' n
New-York 10 Vermont, the similar arJansenent lnui
Gates identity in age Furthermore, the seveiai less
regarded by Dana IN his manual as "A Arn'sn
all kinds referred to the E"zoc by tue author anu
the difference in views relates only to ihe amount
territory In New-Ensland covered oy the Arcne"n'
PROFESSOR COOKS PAPER.
Professor George IL. Cook read paper on the
Now Red Sandstone formation OF New-Jersey."
The following is an abstract OF his pape-:
He mentioned the papers Of Professors Rogers
Hitchcock Emmons Cook Russell, Fontnine. Waling
and Others which had previously been presented to the
pubo He also mentioned the difficulties attending the
study of the formation. in consequence OF Its beng oil
.uro wafer origin of the scarcity Of fossils In IL, the
slight disturbance to which u mas Deeh ~ - anu m ,e
The interest which attaches TO IL Is duo to The tact
that the only rsrres'p1syg de snscrys on on time ins
which was occupied by the Perrnian Trassic. anG
o0lto formations He snowed scnic nS"Tss s,o oi h
strong resemblance to the Ltpldohriron' Wnich IL Is
well knOwn does not occur above Iermian He proved
that. from the uniform northwest up OF tnc
aud the breadth OF toe formation, wnlch Ia lts widest
part the Delaware Is thirty miles, ~ mus, II NC ,n
ference aud computation are oortec We cish, Hni.s
thick. He did not however accept TINS conclusion Dut
Indeed from tho Of older lnestones IN IL
that It must be- much thinner. probably only u Few
Thousand Zee, thick A.,
rcd sandstone of Eastern Virginia having a uniform
DIP inferred thar there was an axis of
these two belts OF red sandstone and that rs this axis
rose the belts OF sandstone were elevated so "a 10
give The rocks Of the belt the northwest northwest
din aud those the southeast side southwest dip II
has been thought that these beds OF red sand
two belts aud that the middle portion was elevated and
has been since away. Professor Cook vlew' now
TWO had always beeu above the water, and
that the wearing away Of tins dry land n,ervsnng De-
icrla from which these red sandst"nes nave pccn oe
lie showed specimens also to prove mat Tue lower
of red sandstone have been elevated above
the water along southeastern edges and worn OF
the rock southeast OF Tito help supply materials
FOR the higher Layers. The ridges common IN The
district he showed TO be formed Oy sheets
of melted matter which had been intruded
between the strata of red sandstone, ana had
there hardened and that the prominence OF hese strata
due 10 the wearing away OF the sOit sHluStoe io
From curious irregularities In the surface OF tins
red sandstone area az well "a IRON thc coniorna.J
however the rdges might be, he was Inclined 10
the view that there had been unequal suhsdence
ia The sandstone
THE GEOLOGY or BERMUDA
The address of Professor William North Rice, of
Wesleyan University, on the Geology Of Bermuda
was marked by ability and interest. His observa-
tons were made during residence of several weeks
in the Winter OF l37G-'77. Appended is brief alb
stract of his remarks;
The rocks in Bermuda Of course limestone. vary
ing exceedingly in texture. Among the varieties
are an unconsolidated calcareons sand, sub
crystalline rock OF almost tnty eompacine's,
"a coarscly crystalline stalagmite aud various
intermediate gradaioDs. The hard rock Il popularity
called "base rOos," tnOagh It by no means uniformly
undercs the softer rock nor Is II necessarily Older
Three kinds OF coral rock are recognized 10y Dana: reel
rock beech rock, dI1f rock The Ist s generally easily
Gistngushahe from hc'Ohers but the beach rock and
drift rock often distinguished IRON etb Other WIN
great difficulty The differences III texture. Illumination
FOSSIL contents are not absolute This
ry follows from the fact tat III thclr te beacI
ana drift rock are strictly continuous TINS con
fuckers Town. There Is no reef roex II Bermuda IN
sol
Is erroneouss stated by Dana. Detached blocks
uf reef rock observed at stocks FONT The
This fact rs Darwin observes, relieves OF the dii
eultics the theory that Bermuda Is an atol Inis
tremely Irregular lHminntiou CHARACTERISTIC Of wiud
formed rocks. 1t Is generally soft, sometimes cIunbnng
readliy IN the fingers sometimes sub-cysiallne ana
very hard
Professor D. c. Suock spoke OF the surface limits
of thickness of the Continental glacier in New
Jersey. lie spoke in substance as follows:
The existence of "a great terminal mOraino and a
Southern limit TO the glacial drift IN New-Jersey
and the adjacent States pointed out to
the author IN 1876, BY Professor Geo, sc
RI. Cook In that year the southern limit
Of the glacial drit was traced the State from
souih Amboy TO a point the Delaware River, near
BcyIdcre Details given OF further Investigations
n tracing this line The paper considered two questions
What was the thickness OF the icesheet along south
ern margin; aud what was the rise of it- upper
sope northward The terminal morane represents both
materials carried forward under the foot OF glacier
and also the earn aud carried it's surface and
dropred ia confused mass 1t melted and retrea6d
northward. These accum uated heaps may In places
have cQualled IN height tho greatest thickness
OF Tie glacier front, although In general
he moraIne would fall short OF the height OF tho glacier
As IL. this terminal moraine raises greatly IN
height from point To point IL Is possibe 10 get a. a
minimum estimate of the thickness by considering the
heights OF some OF the hills III the morae IL IL safe 20
conclude that tho ice front OF the great glacier
from 200 400 feet IN thickness care nj exploration
OF that part OF SewJerse which Is nort1 OF the teim-
nal norane thus far failed TO discover any peaks
crests winch show 40 marks OF n glacier
SCIENCE IN THE SCHOOLS.
The committee on the introduction Of science in
the schools was discharged. and the following were
Amounted committee with the modified title of O
Committee on Science Teaching in the Public