PREFACE TO FIRST EDITION 



The recent growth and development of the professional side of phar- 

 macy has made new text-books necessary. The present volume is the 

 product of such progress. 



The illustrations have been selected with a view to a fuller explanation 

 of the text. The descriptions of the illustrations have been made unusu- 

 ally complete. This is to make it possible for the student to ascertain the 

 use of every article illustrated without the necessity of searching for addi- 

 tional information in the text itself. Some of the illustrations are from 

 original drawings,' others are from electros supplied by the Bausch & ' 

 Lomb Optical Company and the Cutter Biological Laboratory of Berk- 

 eley, California. Still others are taken from recent works on bacteriology, 

 notably Williams' "Manual of Bacteriology." 



Attempts have been made to adhere strictly to the subject from the 

 standpoint of the pharmacist, with only enough treatment of general 

 bacteriology to make clear the collateral relationships, especially as it 

 pertains to medical, and commercial or industrial bacteriology. 



While this volume is primarily intended for students in colleges of 

 pharmacy, it is hoped it will also be found useful by practising pharmacists. 



SAN FRANCISCO. 



