PREFACE TO VOLUME III 



The present volume concludes the Bibliography of Fishes, and in it 

 is the test of the practical value of our task, which is its highly de- 

 veloped Index. For the reader who seeks information relating to 

 fishes should be able promptly and easily to put his finger on whatever 

 has been written on his theme, — whether it deals with fishes living 

 or fossil, their distribution, physiology, anatomy, development, tera- 

 tology, their Ufe-habits, minute structure, commercial importance, 

 artistic interest, food-value, or their significance in biological economy. 

 In fact it is our hope that such a Bibhography will be useful not to 

 ichthyologists only but to seekers of knowledge everywhere. 



Thus the chemist who studies egg-yolk, the sanitary engineer who 

 aims to destroy disease-bearing insects, the physiologist who seeks 

 data on the regeneration of nerves, the student of the cancer problem, 

 the anthropologist who describes the life-habits of primitive peoples, 

 the bacteriologist whose work touches diseases in fishes, the medical 

 practitioner who would know the earlier hosts of certain parasites or 

 about oils digestible to his patients — • even the amateur of heraldry, 

 or the theologian — each and all of these will here find materials 

 which concern his work. 



If the reader will refer to the table of contents mapped out for the 

 Bibliography in Volumes I and II he will note that hitherto were 

 published only (I) Authors' Lists of Titles and (II) Anonymous Publi- 

 cations. There remained (III) Pre-Linnsean Works, (IV) General 

 Bibhographies which included references to Fishes, (V) Voyages and 

 Expeditions, (VI) List of Periodicals relating to Fish and Fish Culture, 

 (VII) Subject Index of Authors' Titles and Final Index, and (VIII) 

 Addenda and Errata of Volumes I and II. 



Those headings, then, (IV) to (VIII), will be found in the present 

 volume. The original plan has been changed only in detail. Thus 

 headings (VII) and (VIII) have been transposed for convenient refer- 

 ence, and the Addenda (placed at the beginning of Vol. Ill) have 

 been enlarged by introducing themes (e. g. fisheries or fishing methods) 

 which earlier for specific reasons had been largely omitted. In fact, 

 it was found that the work was undergoing an evolution of its own, 



