PUBLISHED BY W. A. TOWNSEND & ADAMS. 15 



BBPEETOEY OF PEACTICAL SCIENCE 



Cju Comical ftetos 



AND 



JOURNAL OF PHYSICAL SCIENCE. 



Devoted to Practical Chemistry as applied to Pharmacy, Medi- 

 cine, Manufactures j and Arts. 



Edited by "Wm. Crooks, F. B. S., authorized American edition. 



For more than a quarter of a century this valuable Journal has represented the progress 

 of Chemistry and cognate sciences. It is devoted to Practical Chemistry in all its 

 applications to Pharmacy, Medicine, Manuiactures, Photography, and the 

 Arts; also embracing whatever tends to elucidate new discoveries and advances made 

 in Physical Science, comprising Mineralogy, Metallurgy, Mining, Mechanics, 

 Electricity, and the collateral branches of Science. Its foremost rank, as the leading 

 representative of these interests is undisputed. 



The Chemical News numbers among its regular contributors every eminent Chemist 

 and Physicist in Europe and America. The lteports of the Learned Societies have 

 always been a distinguishing feature of this popular Journal. From the first its readers 

 have had presented a complete account of the proceedings of the Chemical, Royal, and 

 Pharmaceutical Societies, and the Royal Institution. 



While its importance to Chemists, Druggists, Physicians, Colleges, Apothecaries, 

 Manufacturers, Photogeapiieks, Assayers, Dyeks, and nil following scientific pur- 

 suits — is universally acknowledged — the high price of the original journal has necessarily 

 limited its circulation in America. The subscription to the London issue is Twelve 

 Dollars a Tear; the price of the American reprint is Two Dollars and a 

 Iialf per annum, 'post-paid. No interested class can now afford to be without this in- 

 dispensable Repertory Of Practical Science. The American edition, in form, 

 size, type, and engravings, is a facsimile of the original, but a change is made in the 

 time of publication, issuing it in Monthly instead of weekly numbers. Each volume 

 will have a Copious Index, forming a complete treasury of the development of Scientific 

 Progress throughout the world. 



TERMS: 



One year, in advance, postage free $ 2 50 



Six months, do. do 1 50 



Single numbers, in 54 compact quarto pages 25 



An extra copy will be supplied gratis to every Club of Five Subscribers at $2.50 each, 

 in one remittance. The American Reprint was commenced July, 1S67. 



^T" "Chemical News," and "Physicians' Hand-Book," 84; including 

 " Braithwaite," $6.25. Prepaid. 



