Manchester Memoirs, Vol. Iv. {\^\\\ No.%% n 



In preparing this series of papers, I made constant 

 use of the " Royal Society Catalogue of Scientific Papers," 

 and the "Select Bibliography of Chemistry," published by 

 the Smithsonian Institution.'^ On bringing the series to 

 an end, I desire to acknowledge my indebtedness to 

 the libraries of the following institutions : The Victoria 

 University of Manchester, Aberdeen University, The 

 Manchester Literary and Philosophical Society, and The 

 Glasgow and West of Scotland Technical College. At 

 the same time I would tender my most grateful thanks 

 to the respective librarians, Mr. Charles Leigh, Mr. P. J. 

 Anderson, Mr. A. P. Hunt, and Mr. Peter Bennett, for 

 the cordial way in which they facilitated my work. 



^^Smithsonian Miscellaneous Collections, Nos. 850, I170, and 1440. 



