AMERICAN NATURAL HISTORY. 



0 



Hopkins (W.). On the causes which may have produced changes 

 in the earth's superficial temperature. (Quart. Journ. 

 G-eol. Soc, Lond. VIII. 1852, 56).— Amer. Journ. Sc. 2d 

 Ser. XIII. 1852, 282. (61 



J. . . . (T. R.). Review of researches on the physical geography of 

 the alps, in relation to the phenomena of glaciers, to geology, 

 meteorology, and the*geography of plants. By Hermann 

 Schlagintweit and Adolph Schlagintweit. (Quart. 

 Journ. Geol. Soc. L. VII. ii. 1851, 14). — Amer. Journ. 

 Sc. 2d Ser. XIV. 1852, 359. (62 



Maury (M. R). On the geological agency of the winds. — Proc. 



Amer. Assoc. Adv. Sc. VI. 1852, 277. (119 



Oersted (Magister Andreas). Survey made for a canal, through 

 the river Sapoa, to the port of Salinas or Bolanos, in 

 Costa Rica.— Journ. R. Geogr. Soc. L. XXI. 1851, 96. 

 (Map). . (63 



Rozet (...)• On the difference of temperature of the earth and 

 the air immediately above it. (L'Institut No. 948, 69).— 

 Amer. Journ. Sc. 2d Ser. XIII, 1852, 442. (64 



Silliman (B.). Notes on Vesuvius, and miscellaneous observations 

 on Egypt. (Letters to the Smithsonian Institution from a 

 traveller in the East). — Amer. Journ Sc. 2d. Ser. XIII. 

 1852, 131. (65 



Whittlesey (Charles). On the observed fluctuations of the surfaces 

 of the lakes. — Chapter XIX. in Foster and Whitney 1 s Rep. 



Geol. Lake Sup. Part II. 1851, 319—339. (66 



v 



GEOLOGY, 



Abich(. . .). On Mount Ararat. (Bull. Soc. Geol. Fr. 1851, 274). 



Amer. Journ. Sc. 2d Ser. XIII. 1852, 271. (67 



Agassiz (L.). Die erratischen Erscheinungen in Nord Amerika. — 

 Kell. u. Tied. Nordamer. Monatsber. II. 1851, 5, 53, 

 u. 102. (78 



