PREFACE. 



HAVING published a series of papers in the Art Journal, 

 under the title of " Marine Contributions to Art," and some 

 other articles on various products obtained from the Sea 

 in my serial publications, The Technologist and The 

 Journal of Applied Science, it occurred to me that they 

 might be conveniently collected into a volume, which 

 would form a companion to books I had previously 

 published on " The Commercial Products of the Vegetable 

 Kingdom," and on " Animal Products : their Preparation 

 and Uses." Hence the appearance of the present work, 

 which, I believe, will supply a want, by furnishing accurate 

 details respecting articles and products of considerable 

 importance in a commercial point of view. 



Although some works have been published from time 

 to time on special fisheries, none have treated the subject 

 as a whole, or gone over the field of research in a systematic 

 manner, so as to show the importance of the Commercial 

 Products of the Sea to various countries. I have endea- 



