8 DAVID H. BERGEY 



knowledge of bacteriology on the part of students in biology, 

 especially by seniors in arts and sciences, and by graduate stu- 

 dents. The chief interest of this group of students is to gain a 

 broader insight into the relations of the bacteria to many of the 

 important problems of life. Some of these students are pre- 

 paring to teach biology, and others are already teaching in 

 high schools and colleges. 



While in the earlier courses, offered to graduates and under- 

 graduates in medicine, the subject matter presented was intended 

 largely to facilitate the application of the knowledge gained to 

 practical questions in medicine and sanitary science, the courses 

 for students in the arts and sciences have taken on a somewhat 

 different aspect. For these students it has been deemed pref- 

 erable to lay greater stress upon the broad fundamental bio- 

 logical principles involved and much less emphasis upon the 

 practical application of the knowledge. The students of chemis- 

 try and biology in the graduate school, and in the senior class of 

 the course in arts and sciences, have greater interest in the general 

 information obtainable from the study of bacteriology, than in 

 the more intricate problems of infection and immunity, which are 

 of primary interest to the medical student. For this reason the 

 general course in bacteriology for science students should be 

 developed so as to acquaint them with the relations of the bac- 

 teria to problems of food production and conservation and to 

 problems in domestic and sanitary science. 



Bacteriology can be studied with greatest profit by students 

 in their junior and senior years in college, or by graduate stu- 

 dents, after they have had a broad training in biology, chemistry, 

 physics and the languages. The student of bacteriology should 

 have had instruction in general botany and zoology, in plant 

 and animal physiology, in general inorganic and organic chemis- 

 try as well as in elementary physics. With a knowledge of 

 these subjects he will be in a position to understand something 

 of the biological relation of the bacteria to the welfare of man and 

 especially to the problems of sanitary science. The broadening 

 of the prehminary education of the medical student so as to in- 

 clude chemistry, biology, physics and the modern languages has 



