A TEXT-BOOK 



BAGTEEIOLOGT 



INCLUDING THE 



ETIOLOGY AND PREVENTION 



OF 



INFECTIVE DISEASES 



AND A SHOKT ACCOUNT OF 



YEASTS AND MOULDS, H^MATOZOA, AND 

 I PSOEOSPERMS 



EDGAR M. CROOKSHANK, M.B. 



PROFESSOR OF C0MPARAT1"VE PATHOLOGY AND BACTEKIOLOGT, AND FELLOW OF KIKG's 

 COLLEGE, LONDON 



FOURTH EDITION 

 RECONStEUCTED, BBVISBD AND GREATLY ENLARGED 



LONDON 



H. K. LEWIS, 136, GOWER STREET, W.O. 



1896j 



[All rights reserued] 



