1807. Prevost, grain rust, _Puccinia graminis_. _The first instance of a microscopic plant organism shown to be the cause of a disease in a higher plant._ 1810. Appert, directions for “canning.” 1822. Gaspard, infectiousness of material from wounds. 1834. Renucci, itch--itch mite (_Sarcoptes scabiei_). 1835. Paget and Owen, _Trichina spiralis_. 1836. Schultze, air through acid to kill “germs.” 1837. Chevreuil and Pasteur, protected meat did not putrefy; suggested wound infection due to entrance of germs from without. 1837. Caignard-Latour, Schwann, alcoholic fermentation--yeast. 1837. Schwann, air through heated tubes to kill germs. 1837. Bassi, muscardine of silkworms, _Botrytis bassiana_. _The first instance of a microscopic plant organism shown to be the cause of a disease in an animal._ 1838. Boehm, cholera, saw organisms in stools (not the cause). 1838. Dubini discovered _Ankylostoma duodenale_. 1838. Ehrenberg, study of forms. 1839. Schönlein, Favus, _Achorion schoenleinii_. 1839-41. Berg, Thrush, _Oidium albicans_. 1840. Henle, theory of contagious diseases. 1841. Fuchs, bacterial cause of blue milk. 1842-43. Gruby, Herpes tonsurans, _Trichophyton tonsurans_. 1843. Klencke, inoculations of tuberculous material into rabbit. 1843. Holmes, puerperal fever contagious. 1845. Liebert, a potato rot, _Peronospora infestans_. 1846. Leidy, Joseph (American Naturalist), _Trichina spiralis_ in pork. 1846. Eichstedt, Pityriasis versicolor, _Microsporon furfur_. 1847. Semmelweiss, recommended disinfection to prevent puerperal fever. Not followed. 1849. Leidy, 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 duodenale_. 1851. Bilharz, Bilharzia disease, _Schistosomum hematobium_. 1852. Kückenmeister, tapeworm, _Tænia solium_. 1852. Perty, saw spores in bacteria. 1854. Cohn, classed bacteria as plants. 1855. Cohn, disease of flies, _Empusa muscæ_. 1857. Nägeli, 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_. _The first instance of a protozoan shown to be the cause of a disease in a higher animal._ 1865. Villemin, repeatedly transmitted tuberculosis to rabbits. 1865. Lister, introduced antisepsis in surgery. 1860. Rindfleisch, Pyemia, organisms in the pus. 1866. Von Hesseling, cheese ripening. 1867. De Martin, cheese ripening akin to alcoholic fermentation. 1869. Kette, Pasteur’s researches scientific basis for many processes in the soil. 1871. Klebs, Pyemia, organisms in the pus.