EDITOR S XOTE IX 



Palladin's treatment of the topics Growth, Movement and Reproduction (which 

 make up the subject matter of Part II) is much less complete than is his treat- 

 ment of Nutrition (Part I), and no attempt has been made by the editor to alter 

 this characteristic of the book. The reader will appreciate the fact that there 

 is available an enormous wealth of knowledge not seriously touched upon in 

 Part II, which he will be able to approach through such other treatises as are 

 mentioned in the list of books that follows this note. 



The entire manuscript has been read and criticised by Dr. H. E. Pulling, of 

 this Laboratory, who has contributed much valuable advice in regard to some 

 of the editorial additions. 



Since literature references are of prime importance in a book of this kind, and 

 since the citations are not always clearly, fuUy, nor imiformly given, either in 

 the German or in the Russian, it became necessary to verify these and correct 

 them when necessary. This arduous task has been carried out by Mrs. Grace 

 J. Li\'ingston. Nearly all of the references have thus been verified, and the 

 form of citation has been rendered imiform, as far as possible, throughout the 

 work. Dr. Free has cared for the Russian citations. No attempt has been 

 made to indicate what portions of any of the citations are due to correction or 

 completion. Citations that it has been impossible to verify are given just as 

 they appear in the German (or Russian), and are followed by an asterisk (*) to 

 signify this. Some additional literature references have been inserted by the 

 editor, these being generally enclosed in brackets, unless they occur in editorial 

 notes. 



The rapidly increasing frequency of references to Russian authors in scien- 

 tific literature is accompanied by much discrepancy in the EngUsh spelling of 

 Russian proper names. This matter will require more serious attention from 

 scholarly scientific writers in the future than has been accorded it in the past, 

 and an attempt is here made at least to avoid the exacerbation of a condition 

 that is already bad enough. The diflSculty has perhaps arisen mainly through 

 the fact that our acquaintance with Riissian science is almost wholly based on 

 writings in other foreign languages, especially in French and German. We 

 have too frequently taken the German or French transliteration, as the case 

 may be, without regard to the fact that this almost always leads to mispronuncia- 

 tion by the English reader. Thus, Pavlov often appears as Pawlow, which is 

 as incorrect in EngUsh as it is correct in German. The name of the author of 

 the present volume furnishes another example; we have W. Palladin where we 

 should have V. Palladin. (In this particular case, the silent final e of the Rus- 

 sian and of the French form of this name should be dropped in EngUsh, to 

 avoid the resulting lengthening of the last syUable and even the misplacing of 

 the accent, which is penultimate. The name is pronoimced Pal-Iad'-in,' Uke 

 Aladdin.) 



In those cases where it is quite clear that a proper name ought to be regarded 

 as Russian, an EngUsh spelling is here adopted that wiU lead to no serious ambig- 

 uity as to pronunciation and that can be readily retransformed into the Rus- 

 'This is authoritative, from Professor Palladin himself. 



