New-York daily tribune. [volume] (New-York [N.Y.]) 1842-1866, 1846-09-08

Magnesia and lime per cent
The for,nular numbers are al titanic acid. at per
oxide o.: iron and at protoxde OF iron Or Is III
trAn!a;e OF .ronconssung OF at peroxide and al the
trirtanaiei protoxide agreeing Win the formula gwen
by Mozsnder-Mr ALGER believed that Prot. Shepard
did any longer maintain this mineral TO be distinct
spcclc-.
Lake SUPERIOR and as connected with this subject, he
mentioned various interesting discoveries ne had made
while travelling in tina: region At NacAnSw the line
stone was broken into small fragments Ike gravel ana
b!eached white hy the action OF wind and water
Farther on N direct line the limestone becomes OF a
browni,h color and you proceed toward 81 Josephs
River there is evidence OF s,!l! lower mestones MI
then related his observations on the aSe oil the sand
in the Lake superior region he judged tat az
some comparatively recent period the Lake mad been
elevated lar above lis ptesen; hight This he inferred
from the ac, OF observing al the distance OF ~ eet
above the present surface OF the Lake, layer OF vee
Table matter IN some places foot deep This and vari
Gus other facts related by Nh Hall ANA illustrated by
maps &c seemed proof conclusive OF tota! suoEer-
past period OF tie high grounds above tue
Lake
Farther discussou-on this theme was then had
between Messr= LESLIE, DELNIELD and JACKSON
The latter gentleman also illustrated MS remarks by da
grams, maps sc. among whch was one tep'escnuls
section of the Range OF Rocks from Nova scotia TO the
Green Mountains.
Mr.. JONES mentioned instances OF quartz being
Professor EMuoss added observations to his re
mark. of saturday on the Geological structure OF the
Valley OF the Hudson.
4 discussion was thereby created, in which
Messr. JACKSON, EMMoSs REID and LESLIE paruci-
phied.
SAMUEL J. PARKER, Esq. read long paper on
Superficial Earthly Deposits, demonstrating his ideas IN
n very iorcble manner.
The following are the remarks of Mr.. LINcKLAEN,
delivered Saturday on the Green Lakes OF the OuOn
daga Salt Group'-By this name ne intended 10 desg
nate series OF very remarkable bodies Of water in the
central part of State The name mentioned Is that
nv which they are kno Il in the vicinity although ore
OF Them has been described By Mr. VanuXem under thu
title OF Lake Sodom appelation probably derived
from the sulphurous character of is waters.
As the be-; example OF these lakes. the one partcu-
larry treated of in MIR lis paper Is about mile and a
hall East of Fayetteville, the lands o Nj. David
Collin 1t has n diameter Judging by the eye OF about a
quarter of mile We nave not space to give the farther
measurement, do We suppose It necessary Iheo-
res a. To the origin OF these lakes were thrown out IN
the dissertation OF Mr. LINCKLAEN.
The Onondaga Salt Group Il; least lis upper portion
is well known be OF easy destruction when exposed
to weather or to water and instances frequently met
small holov- called sink holes or salt wells
occur in H. plainly traceablc 10 the removal oil the SUB
iaccn rock bv water or some other means OF solution
or dsinegraton These cavities even OF recent oc
curreuce--a To Mr. LIS knowledge, only r
wear or TWO since, where while IA farmer whs po"'ng
II, the immediate vicinity OF the lake before mentioned
with double team sink hole fell IN immediately pc
tween the teams 70 depth OF 10 or - ieet lie
ud rcd that similar occurrence acting OF large scale
would produce lake precisely Ike the one heretofore
descrbed-and was also OF opinion that water was a
principal agent IN eacctng such great changes