11 



13. — Unrecognized Factors in the Transmission of Gases through Water. 

 By W. E. Adeney, d.sc., Curator and Examiner in Chemistry in the 

 Koyal University of Ireland. (February 20, 1905.) Is. 



14.— On Secondary Radiation. By J. A. McClelland, m.a., Professor of 

 Experimental Physics, University College, Dublin. (March 3, 

 1905.) Is. 



15. — On the Temperature of certain Stars. By "W. E. Wilson, d.sc, f.r.s. 

 Plate XL (March 24, 1905.) Is. 



16. — The Partial Differential Equations of Mathematical Physics, Part I. 

 By A. W. Conway, m.a., f.e.tj.i., Professor of Mathematical Physics, 

 University College, Dublin. (March 28, 1905.) Is. 



Title-page, Contents, and Index. (May, 1905.) 6d. 



