PREF ACH. 
ize writer’s Manual of Bacteriology, published in 1892, has been 
very favorably received both in this country and abroad, but 
its usefulness has no doubt been to some extent restricted by the 
size and expense of the volume. The following is an extract from 
the preface of the Manual: 
“A Manual of Bacteriology, therefore, which fairly represents the 
present state of knowledge, will consist largely of a statement of facts 
established by experimental data, and cannot fail to be of value to 
physicians and to advanced students of bacteriology as a work of 
reference. The present volume is an attempt to supply such a man- 
ual, and at the same time a text-book of bacteriology for students 
and guide for laboratory work. That portion of the book which is 
printed in large type will, it is hoped, be found to give an accurate 
and sufficiently extended account of the most important pathogenic 
bacteria, and of bacteriological technology, to serve as a text-book for 
medical students and others interested in this department of science. 
The descriptions of non-pathogenic bacteria, and of the less important 
or imperfectly described species of pathogenic bacteria, are given in 
smaller type.” 
For the benefit of students of medicine and others who do not care 
especially for the detailed descriptions of non-pathogenic bacteria and 
the extensive bibliography contained in the Manual, this TExT-Book 
OF BACTERIOLOGY is now published. It comprises that portion of 
the Manual above referred to as printed in large type, revised to in- 
clude all important additions to our knowledge of the pathogenic 
bacteria since the original date of publication. 
1896. 
