S5". 5" 



PREFACE. 



This guide in elementary technique is intended for 

 the use of medical and other students beginning 

 work in either Histology or Bacteriology. 



In its main features it is a new arrangement 

 of what is found in other books on these subjects, and 

 in many instances direct quotations are made. 



The absence of any concise, and yet sufficiently full, 

 account of methods which will enable the beginner to 

 form from the first, clear ideas of the various steps is 

 the only apology offered for adding another book to the 

 many excellent ones now to be found. 



It is hoped that this little book will answer that com - 

 mon question of the beginner, "What shall I do next:"' 

 We have tried to make plain those simple points which 

 are usually taken for granted, and which therefore, often 

 greatly perplex the student. 



It is not expected that the book will furnish the ex- 

 perienced student with much information; it is written 

 to help the beginner and while it is thought that it will 

 be sufficiently complete for the requirements of all such, 

 we especially hope that it will serve as an introduction 

 to more advanced works, and that the result will be, 

 a clear understanding of the elementary methods, and 

 therefore a much more intelligent use of the advanced 

 books on Histology and Bacteriology. 



It will be noted, that no attempt has been made to 

 introduce descriptive Histology and scarcely any de- 

 scriptive Bacteriology, but that the book is confined to 

 Technique. 



