AMERICAN JOURNAL OF SCIENCE. 
FOUNDED BY PROFESSOR SILLIMAN IN 1818, 
Devoted to Chemistry, Physics, Geology, ° Physical Geography, Mineralogy, 
Natural History, cattgaey and Meteorology, and giving the latest discoveries - 
in these departments 
Epirors: JAMES D. Dana, Epwarp 8. a aud B. SrLLIMan. 
oe soot aera peste ne ag AY, J. P. Cooks, JR., and: JoHn Trow- 
BRIDGE, of Cam ge, NEw and A. a Seda ad "Yale. and G. F. 
ephiuae of the wanes of Peuinsyl Tasted Philadelphia. 
o volumes of 480 pages each, published noun 3 in piesa NUMBERS. 
This oes Rade its jirst series of 50 volum uarterly in 1845, and its 
second s 50 volumes as a two-monthly in 1870. "The monthly series com- 
sheiieadl Se in 18° ar 
Tw eopies of each original en. are, if requested, struck _ se 
the pas without charge; and m ¢ the author’s expense, provide mie 
ber of copies desired is.stated on the einusatios or communicated to the printers 
Jouraa 
The of communication the ee On. 
Autiles edt be sent in ‘we ‘onthe before we time of issuing the number for 
whic: Sie are inte: wipe Notice is ven ashy communications — 
pian gs e been, or are to wt ho He shed rhe i ther Journal oe 
Subseries price $6. nt, Ww complete sets on sale of | 
the first and second series. 
- Address the PROPRIETORS, 
J. D. and E. Ss. DANA, New mayen Conn. 
‘DANA'S: ‘WORKS. 
——— 
— ‘Tay LOR. s te New Yorke Ian 1 
aS Ivisoy, Brat 
a Dasa 
