84 Miscellaneous Intelligence. 
2. National Academy of Sciences. — At the session of the 
National Academy in New York City, commencing November 17, 
the following papers were read: 
On the basin of the Gulf of Mexico; J. HE. H 
On the origin of the coral reefs of the ‘atm er ‘lorida Banks; ALEXANDER 
GASSIZ. 
)bservations on ice and icebergs in a sonst oe F. Sonwitics. 
‘he duration “if ve Arctic bbe ee ty) 
{ineralogica ; BENJAMIN SIL 
ae relationship ot the Carboniferous Boohebiseli to living and extinct Myria- 
ds; Sam 
On the “allinteiky of the "oath as deduced from pendulum experiments: ©. 8S. 
a te 
An improvement in bes Sprengel air-pump; O. N. Roop. 
The thermal balance; 8. P. LANGLE 
Measurement of radiant energy; S. P. LANGLEY 
engi Stan determine the phan sah of = Sera EAs Loomis. 
Th 
ntimony mines of Southern Uta BER 
mhe Sangiuncbats ore deposits of es ‘Guitoa States an Mexico; J. S. NEw- 
On photographing the Nebula in Orion; HENRY 
re condensers for currents of high potential ; Saceee rp BARKER. 
ee's gravitating trap; ALEXANDER GASSIZ. 
Gheervations on ice and icebergs i in the polar pe Lieut. F. SonwatKa, U.S. A. 
The deposits of crystalline iron ores of Utah; J. S. NEwBERRY. 
. D. Cop 
On a anid and general hasan in analysis ; WotcorTt GiB 
Note on the relations of the oe and Montrose Slackintoneé with the sand- 
stone of | the Catskill Mountains; JAMEs HALL 
3. Annual Report of the Chief of Enyineere to the Secretary of 
War, for the year 1879. In three Parts, containing over 2400 
pages 8v bead: Ae the special reports relating to torts, harbor 
and river surveys and improveme shes and maps illustrating the 
same, there are the following: Report on the Contents of Trough- 
ive, ae 
heed ow panel (P. 1945); Report on the Errors of Certain 
Ther alibration, ete. USSELL, (p. 195 
Report o on (ae wigs and Sediment observations in the Atississipps 
J. B. ; ne ne 1963); Annual Report of Capt 
ngineers, (pp. 1977-2313), and including 
the Reports oe: a anton party in Colorado and New Mexico 
from Spanish Peaks to the South, in 1878 and 1879, by Prof. J. J. 
SrevENsoN, and an ornithological report on observations and 
collections made in portions of "Californta, Nevada and Oregon, by 
Assistant H. W. Hensnaw. 
rt of Captain Wheeler contains a long table of alti- 
tudes determined mir ~ survey in Oregon, California, Nevada, 
New Mexico and Ari 
e repent siete ie (pp. 2331 to 2343) . — Report 
on the Pagosa Springs of Colorado by Dr. WA, 
in whose waters sodium sulphate constitutes tons -tworthirds of 
