CONTENTS. Ni 
NUMBER XXXIIL 
Art, XVIII. Pas some results z Ave Earth’s Coditastiont 
from coo - by James D. Dana. Part V, Formation 
of the Gonteanca plateaus sd Oceanic depressions.--- 1 
XIX.—On a Secondary Spectrum of very large size, with a 
Contraction for Secondary Spectra; by O. N. Roop,.-. 172 
XX.—Notes on the Corundum of N, Carolina, Georgia, and 
XXI.—The aticas of the Gaephorus ------- " 186 
_ XXII.—Explorations of 1872: U. s. peg a Survey of the 
Territories, under Dr. Haypen; Snake River Division,-. 194 
ane —Contributions from the Sheffield Laboratory of Yale 
No. XXVII.—On the Minerals found at the 
Tilly Foster Iron Mines, N. Y.; by E. 8S, BremEnsaven, 
XXIV.—The ey of a new ‘Double Star, @ Del yy 
by S. W. Burnu 
bo 
oO 
~T 
XXV.—Apparatus .. Rapid Filtration; by E. W. Mortey, Za 
SCIENTIFIC INTELLIGENCE. 
sics and Chem ory —On the reflection of Solar heat from the surface a. seer 
Geneva, L. Durour, 216.—Thermodiffusion, W. FEDDERSEN, 218.--A Cyc 
of Quatative Chemica pode Frank H. STORER, (Part II.) Teel 
Ozono, Note e Riflessioni di GrusepPE BELLUOCI, 
Geology 3 Sanat Histor th Calorific Value of the Ligni ites of Western 
America, R. W. R ND, 220.—The Mineral Region of Lake Superior, 224.— 
On the Carboniferous : Myriapos preserv a in the Sigillarian Stumps of Nova 
Scotia, S. H. ScuppeEr, —Dr. Dawson on the Post-pliocene Geology of 
Canada, 226, eae of the Geological Survey of the State of New gs “cat 
e Fo 
Tt ne: Footprints 
Middle Coal Measures at Osa sage in Kansas: Geological Survey of Kentucky: 
Geological Survey of Illinois, 228. Bases Descrizione ie ere dell’ 
Tsola d’ Elba, per sevire alla Carta della medesima, ‘di cn Cocont: : The Euro- 
ican 
pean Lobster, Palinurus Ms gin in the Brighton Aqua Me: exi I 
pods, 229.—Bentham’s N otes the rag oeg 8 tinier: and Geographical 
Distribution of Composite: A. *S. Oersted’s System der Pilze, Lichenen und 
SEBA J. : Catalogue + of the ous and 
Vase Typtogamous Plants of Canada, ete., cal Index 
to all the Medicinal Plants, etc., A. PoLLOcK, 230 —New method of observing 
the rate of growth in plants, BE. ASKENASY: 
. : eral occurrence of Sta’ I 
Sieve-cells, Dr. Briost: Influence of Temperature on the development of Peni- 
entific Intelligence.—On the sudden cooling of melted Glass and 
Particularly on ‘Rupert's Drops,” V. pp LUYNES, 232.—Deep Sea Exploration 
on board “The Challe es rd Petroleum of Upper Burmah, 935.—India-rubber 
no tengo of Upper urmah : —— ne Prof. eat 286. —Mete- 
: ; eater hh Associa: 
tion for the Aancenent of Science: Frenc. Ts hauaaa ae <a en 
— Obituar 
