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CONTENTS, vii 
XXXVII—Observations on the Metamorphosis of Siredon 
into Amblystoma; by O. C. Marsu 364 
XXXVIIL —WNotice of a new and detantivs species of fossil 
Horse (Equus parvulus), from the Tertiary of Nebraska ; 
by O. C. Marsu, 374 
XXXIX.—On Hansen’s Theory of the physical Constitution 
of the Moon; by Srwon Newcoms, 376 
XL.—N otices of ig as in shee aia Chemistry—No. IT; 
by Grorce F. Bar 379 
XLL—Observations of the “hives of Sept. 5th and 15th, 
1868, at Mt. Desert Island, Maine; by W. 8. Girman, Jr., 390 
XLH.—Discoveries of new Planets; by J. C. Watson, -.-. 392 
~ $CIENTIFIC INTELLIGENCE, 
Chemistry and Physics.—On. the combustion of a and carbonic o 
gen under great pressure, FRA ' he reduction and saturation of 
organic compounds by hydrogen BER ste rsulphid of hydro- 
gen, Hormann, 396. — the compounds of molybdie and phosphoric acids, 
Dersray, 397.—On iodid of silicon and silico-iodoform, FRIEDEL: On the density 
of the vapor of orga MITSCHERLICH, DEVILLE and Troost: Connotations of 
etism, CHASE, 3 
Mineralogy and Geology.—On a new Mineral in Cryolite, Rann, 400.—Notes on the 
Later Extinct Floras of North America, with Descriptions of some New Species 
of Fossil Plants from the Cretaceous and Tertiary Strata, NeEwBERRY, 401.—On 
Human remains along with those of the Mastodon in the “* of California, Wrxs- 
Low, 407.—Meek on the shell structure of some Spirifera, 
Botany ana Zoology.—Botanical Notices, 408.—Contributions to the Fauna of the 
G 
genus Lela’ 
erations drawn from the study of a Crickets, Sucoors, 417.—Remarks ge nae 
new fossil Insects from the Carboniferous Formation in America, SCUDDER, 
iredon a stage in the development of yackesdiaetea SILLIMAN, 221. 
a mtelligence.—Earthquake of Aug. jaca 1868, 422.— 
Miscellaneous Scientific 
Earthquake in California, Oct. 21: List of Papers read at session of the 
Nati ional Academy of Sciences in August, 1868, at Northampton 428.—On a Me- 
teorite which exploded over Kansas, June 6, 1868, MupGE, 429.—Corrigenda for 
Article XIV on Vision: British Association, 430. 
Bibliography.—Report of J. Ross Browne on the Mineral Resources of 
Miscellaneous 
the States and Territories west of the Rocky Mountains, 430.—Report of James 
W. Taylor on the “Mineral Resources of the United States east of the Rocky 
Mountains,” 481.—A treatise on the Concentration of all kinds of, Ores, including 
Gold-bearing sulphurets, Arseniurets and Gold and 
Silver ores generally, Kustei: The American Annual Cyclopedia and Register of 
Important events of the year 1868: The Wine Maker's Manual, ReemeLmy, 432.—_ 
