PEEFACE. 



IN this little handbook an attempt has been made to give 

 concise directions for preparing the most important sab- 

 stances that enter into the composition of the fluids and 

 tissues of the animal body. The methods herein presented 

 are compiled from the most recent and important works on 

 physiological chemistry; and in certain instances two or three 

 procedures are given for obtaining the same result. 



The two hundred or more tests are arranged in alphabetical 

 order ; and the name of the scientist who suggested the test, 

 or the name under which it is ordinarily known, is given in 

 each case. My most earnest desire in compiling this hand- 

 book has been both to facilitate general work in bio-chemical 

 laboratories and to afford the student an opportunity to have 

 conveniently at hand all the necessary facts in modern 

 scientific testing, so that loss of time in consulting works of 

 reference might be reduced to a minimum. 



A. HANDEL. 

 COLLEGE OF THE CITY OF NEW YORK, 

 January, 1896. 



ill 



