PROFESSOR TYNDALL'S NEW WORK. 



Just published, in crown 8vo, price 2s. 6d. cloth, 



ON RADIATION; 



The ' Rede ' Lecture, delivered in the Senate House before the University of 

 Cambridge, May 16, 1865, by Professor Tyndall, LL.D., &c. 



By the same Author, Second Edition, price 12s. 6d., 

 HEAT CONSIDERED AS A MODE OF MOTION. 

 London : Longman, Green, and Co., Paternoster Row. 



"SILLIMAN'S JOURNAL." 

 THE AMERICAN JOURNAL OF SCIENCE AND ARTS. 



[Two Volumes Annually, 450 pp. 8vo.] 



Published in Numbers (illustrated) of 152 pages, every other month; viz. 1st of 

 January, March, May, July, September, and November, at New Haven, Con- 

 necticut, United States, by 



B. SILLIMAN, JUN., and J. D. DANA, 

 Price 5s. per Number. 

 Edited by 

 Professors B. Silliman, B. Silliman, Jun., 

 and 

 Prof. James Dwight Dana (New Haven, U.S.), 

 In connexion with 

 Prof. Asa Gray, of Cambridge, U.S. 

 Prof. Louis Agassiz, of Cambridge, U.S. 

 Dr. Wolcott Gibbs, of New York, U.S. 

 Prof. S.W. Johnson, Scientific School of Yale College; and 

 Prof. George J. Brush, Scientific School of Yale College. 



This work has now been established more than forty years, and is the only 

 Journal of the kind in the United States. It is devoted to Physical and Che- 

 mical Science, Geology, Mineralogy, Natural History, Geography, 

 Metallurgy, Agricultural Chemistry, Photography, and kindred de- 

 partments of knowledge, and contains original papers, as well as abstracts of foreign 

 discoveries, on all these topics. 



Eighty-four Volumes have already been published. Fifty in the first and 

 Thirty-four in the second Series. 



Most of the back volumes can be obtained of the Publishers. 



All communications, remittances, &c, to be addressed to Silliman and Dana, 

 Office of " Silliman's Journal of Science," New Haven, Connecticut, United 

 States : or in London, Trubner and Co., Paternoster Row. 



April 1863. 



{ADVERTISEMENTS continued on 3rd page of Cwcr. 



