PREFACE TO FIRST EDITION Vll 



additional chapters which may be used during courses 

 for non-medical students. A chapter containing a 

 fairly complete list of formulae for culture media 

 employed in advanced work has been added with the 

 object of making them easily accessible to those engaged 

 in advanced work. 



The laboratory guides of Novy, Eyre, Frost, 

 Gorham, Kanthack and Drysdale, and Connell, and 

 the American edition of the Manual of Bacteriology 

 of Muir and Ritchie have been freely consulted. I 

 take this occasion of expressing my deep gratitude to 

 Professor Edwin O. Jordan and Dr. Norman MacLeod 

 Harris for their invaluable help and suggestions in the 

 preparation of this guide. 



Paul G. Heinemann 

 Chicago, III. 

 June, 190S 



