32 HISTORICAL INTRODUCTION 



1838. Boehm, cholera, saw organisms in stools (not the 



cause). 

 '-' 1838. Ehrenberg, study of forms. 



1839. Schonlein, Favus, Achorion schoenleinii. 

 1839—41. Berg, Thrush, O'idium albicans. 



" 1840. Henle, theory of contagious diseases. 



1841. Fuchs, bacterial cause of blue milk. 



1842—43. Gruby, Herpes tonsurans, Trichophyton ton- 

 surans. 



1843. Klencke, inoculations of tuberculous material into 

 rabbit. 



1845. Liebert, a potato rot, Peronospora infestans. 



1846. Eichstedt, Pityriasis versicolor, Microsporon furfur. 

 1849. Leidy, Joseph (American geologist), considered 



"vibrios" to be plants. 



1849. Pollender, Anthrax, saw rods in blood. 



1850. Davaine and Rayer, Anthrax , saw rods in blood. 



1851. Griesinger, Egyptian chlorosis, Ankylostoma duo- 



denale. 



1851. Bilharz, Bilharzia disease, Schistosomum hematobium. 



1852. Kiickenmeister, tapeworm, Twnia solium. 

 1852. Perty, saw spores in bacteria. 



- 1854. Cohn, classed bacteria as plants. 

 1855. Cohn, Disease of Flies, Empusa musccB. 

 1857. Nageli, named bacteria, Schizomycetes. 

 1857. Pasteur, lactic, acetic, butyric acid fermentation. 



1860. Zenker, Trichinosis, Trichinella spiralis. 



1861. Pasteur, disproof of spontaneous generation. 



1863. Davaine, transmitted anthrax by blood injections. 

 1865. Pasteur, Pebrine of silkworms, Nosema bombycis. 



1865. Villemin, repeatedly transmitted tuberculosis to 



rabbits. 

 ~" 1865. Lister, introduced antisepsis in surgery. 



1866. Rindfleisch, Pyemia, organisms in the pus. 



1866. Von Hesseling, cheese ripening. 



1867. De Martin, cheese ripening akin to alcoholic fer- 



mentation. 

 -1869. Kette, Pasteur's researches scientific basis for many 

 processes in the soil. 



