EDITOR'S PREFACE. 



In preparing this book for the English-speaking public, the 

 undersigned desires to state that he has undertaken this task for 

 the purpose of supplying a long-felt want. Most books published 

 of late contain merely a collection of all the methods of analysis, 

 or the selection of a number, put side by side without criticism. 



The book in its present shape is a laboratory guide, which 

 enables even beginners, and all such who cannot make the subject 

 of milk analysis a speciality, to cope with this otherwise compli- 

 cated task. 



The selection of the proper method of analysis is taken off 

 their hands and has been supplied by a man of practical experi- 

 ence, who has for many years made this subject a specialty. 



Even chemists will find this book valuable, the more so as they 

 are the best able to judge the advantages derived from the proper 

 selection of the method adapted for the execution of an analysis. 



The original has been carefully revised and many of ,the 

 plates which illustrate the work have been substituted by better 

 ones taken from the best publications on this subject, while others 

 not contained in the original have been added. 



II. ENDEMANN, Ph.D. 



New York City, January, 1882. 



