, 1874-04-15
ACADEMY oF SCIENCES.


263 Wabash avenue last evening, at which there
was general attendance Of mombora. Dr.. Il.
A. johnson occupied tho chair.
Prof. Do In Fontaino presented paper giving
tho results of his Investigations continued
through ton years on turhium, leading linn to
tho conclusion that it ia motal. Ho dsagrool
will, Bnzelius and othors, vino hayo regarded
turbium as a compound. 'IIe also mado somo
rolnarka on tho spoctroBcopio examination Of
old blood, arriving at the conclusion that micro
scopio tests show no difference between old
and now blood. At tho noxt meeting
ho will givo somo illustrative examples.
Tho Secretary thon read list of tho additions
to tho library Of tho Academy sinco the last
meeting, which wero as follows From tho Roy.
John Gulck-2 pamphlets on now aolatinol-
lanp pamphlet on diversity Of evolution.
From h1t. &. @. Brodhoad, State Goologist OF
AIisaouri-2 volumes Geological Reports, 1866,
'71-'72; geological stlas, with report; From
phulnmiln Of California. From the Hon. J.
A. Logan-1 copy Acrididn Of North America.
From Prof. E. .. Copc--1 pamphlet synopsis OF
Nov Vertobra Of Colorado. From National Oh
1871. From Minnesota Academy OF Scienco-1
copy Bulletin, 1874. From Department Of Into
rior-Descriptyo Catalogue Of Photographs Of
tile Uuitad Stated Geological Survey Of tho Tor
ilfQf4GS. I[UIN IHuuG 1lEe 04ls N.-HulU6 tu
Microsoopical Crystns. From DR.. Slack-Report
Of Committee on Fisheries, N. ]. From tho
Golden Club, England-9 copies Of Report OF
Proceedings. From Institute Of Microscopy,
Dorlin-1 pamphlet.
Additions to the museum we're as follows:
From Trustees OF Academy, skeleton of zebra.
From lion. J. D. Cation, specimen OF foBsifwood.
From Mrs. Ford, specimen Of wator-pnppy.
From DR.. Andrews, specimens Of fossil shells
from the summit OF afosa Rica, near Fort Das-
Trorn nr TpvA nfrt., ~
young camel. From Robert Sturgeon, two
Iornai frogs from Texas. From q. q. Walker.
specimens Of fossil coral, birds. From Mr.
Clark, herring gall, From collection. s birds.
I'll, land aud fresh-water shells Of Lasallo
County, Ill. An illustrated pamphlet from ".
| ". Calkins. From Dr. II. 4. johnson, a sot OF
Pacific Railway Surveys, u vols.
mirage az seen on Lake Michigan. He Haid tho
| sun aul moon in rising over tho lake present
some singular distortions. Tho mirage ia more
distinct WHOM there III warm wind blowing from
tile southeast. A .pcouliarity is o double hori-
hours. Tho inverted image is cut OF BY tic
lower horizon. 1fo had not concluded whether
tho upper horlaon seen was horizon Of water
or rising mist, or stratum Of cold mir. II the
latter, i was not always alone. for ut times there
the dli1oront strata, tho vapor assumed shapes
like lamp.shados. Tho Professor exhibited a
diagram Of yaso shapo, Which he had sletclcd
from nature. He would attonpt no explanation
of these, singular phenomena, bnt presented
| thon to the Aoademy for consideration.
He also disputed tho theory advanced by DR..
Lhphaln in d lato article in the " Lakeside
Monthly" that Laho Michigan had formerly 9
lower levci. I1e lad examined but found nc
beach lines and briefly explained that tho ap.
poarauce Of ; lowor bed waa canscd by tho Gro.
sive power OF streams which cut out deop ohall'
nols Just boforo entering the bodea Of water in
to which they flow.
slr. Colbert gave, tue history Of tho discovery
by Capt. Turnoc!t, lato U. S. A., OF All aerolto II
faet in.diamoter in tho Yellowstone region.
Ho also explained tho raBults OF some receu
Investigations by himself ~ to tho mean diB.
tance Of the moon from, tho earth, which he con
clndcl WAS 238, ,974 miles, tle paralla1 being s.
minutes, G.67 seconds.
Prof. Andrews announced as pioco Of scien
tiho nows the discovery OF complete Hkeletol
OF a painotherium magnuln, found in tho gyp
sum beds as pariB., dlsproying tho theory o
Cuyier that it WAS In alape like tue rhinocoros, a
1t was, on tho contrary, o 1.-the and graceful
animal like deer, except that 1t l,ad Hwal,
siapoa mock. The conclusion was eyidont TIN
in inducing forms from Fragments, the resu
ia not alwaya infallible.
The meeting then adjourned.
THE HALSTED STREET V1ADUCT.
A meeting Of tho citizens Of the Eleventh War
was hold yesterday oyoning at No. Ct North Tn
stcl stroot to consider tho question Of tho ore,
ton Of the IIa1stol street vialuot. On motto
Of ox-Ald. Ackhoff, Aid. Wllito was called to Il
chair. mid htr. Charles Perry was called upon
act as Secretary. There were present abo1
aixty yotors OF the ward.
Ex-A1.D. AoKHoPF
inaisted that the public had righta which Il
railroads ought ia respect, md one Of these WI
tho erection by tho latter OF the approaches
tho vladaot, which he thought IT wis unfair