Miscellaneous Ribliography. 295 
and the “ morning ” from “the restoration of the brilliancy of the 
sun;” the “evening” ” of the sixth day “from the separation of 
Mercury from the sun,” etc. The author by bringing more exact 
science to bear on the subject and a wider oichaneey will be en- 
“ie to prune his work of some manifest defects. 
The American Chemist: a Monthly Journal of Theoretical, 
Go ciyaioat and Technical Chemistry. Edited by Cuas. F. Cuanp- 
7 ; 
LER, Pu.D., an . CHANDLER. ew York, 1870. (William 
Baldwin & Co., 434 Broome St.)—The American reprint of the 
Cenc! News having been given up, the ee elo and 
to it in value. The first two — hav ve been seu 1 @, 
announced that after the close of the current year, the American 
Chemist will be conducted as an entirely independent journal. 
The neenn On price is $5. 
4. On the Gulf Stream, and the Thermometric hononoledge of the 
Atlantic Oeei pee adjoining lands in the year 1870; by Dr. A 
Prr 4 pp. 4to, with three _ colored temperature 
Ghaatk Got o.. Stig 1869. (Justus Perthes. From Petermann’s 
and the lands adjoining, including the later poet of the most 
recent expeditions. sea temperatures, as Beles as the saltness 
region between the meridians of 75° W. and 60° E., north of the 
arallel of 35°; the first, the isotherm for J uly and the second for 
sake pages are devoted to the instructions given to the second 
n North-pol polar Expedition, 1869-1870. 
ae :. Boaeeiog of Gold and Silver Ores, and extraction of their 
respective metals without Quicksilver; by G. Kusren. 145 pp- 
12mo, San Francisco, 1870. (Dewey & Co. —This little treatise 
contains an intr chapter on the classification of silver 
oductory ¢ 
ae .¥ which is followed by a chapter on roasting, divided into 
treating, respectively, of the chloridizing and the or 
