PREFACE. 



No attempt has been made in the following pages at a formal, 

 systematic presentation of Bacteriology. The subject-matter has 

 been arranged entirely with reference to progressive work in the 

 laboratory and, more especially, corresponds with the work as 

 carried on in the Hygienic Laboratory of the University of Michigan. 

 The course covers a period of twelve weeks of daily afternoon work. 

 Illustrations of the various bacteria and of their cultural character- 

 istics have been expressly omitted, as the student is expected to 

 sketch from observation the form of .each organism and its peculiar- 

 ities of growth in the colony, and in tube culture. Blank pages are 

 provided for this purpose and for such additional notes as may bo 

 desirable. 



The works that have been drawn upon freely in the preparation 

 of these pages are Fraeukel's Grundriss der Bakterienkunde, 

 Eisenberg's Bakteriologische Diagnostik, and Fliigge's Die Mikro- 

 organisnien. The larger works of Baumgarten and of Sternberg were 

 likewise frequently consulted, and in many instances recourse was 

 had to the original sources. 



For the frontispiece plate, which is intended to show the com- 

 ponent parts of the microscope, I am indebted to the firm of E. 

 Leitz, of Wetzlar. 



F. G. NOVY. 

 ANN ARBOR, April, 1894. 



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