844 THE POPULAR SCIENCE MONTHLY. 



ences. His principal independent works are " Untersuchungen und 

 Beobachtungen tiber die Verbreitensart der Cholera" ("Researches 

 and Observations on the "Way in which Cholera is spread," Munich, 

 1855 ) ; " Hauptbericht tiber die Choleraepidemie von 1854 in Bay em " 

 ("Principal Report on the Cholera Epidemic of 1854 in Bavaria," 

 Munich, 1857) ; " Ueber den Luftwechsel in Wohngebauden " (" On 

 Change of Air in Dwelling-Houses," Brunswick, 1858) ; " Die Atmos- 

 pharische Luft in Wohngebauden" ("Atmospheric Air in Dwelling- 

 Houses," Brunswick, 1858) ; "Cholera regulativ von Griesinger, P. 

 und Wunderlich " (" Cholera regulation, by Griesinger, P. and Wun- 

 derlich," Munich, 1866) ; " Ueber Oelfarbe und Konservirung der 

 Gemalde " (" On Oil-Colors and the Preservation of Pictures," Bruns- 

 wick, 1869, second edition, 1872) ; " Verbreitungsart der Cholera in 

 Indien" ("How the Cholera is spread in India," Brunswick, 1871) ; 

 " Zur iEtiologie des Typhus " (" To the Etiology of Typhus," Munich, 

 1872) ; "Beziehungen der Luft zur Kleidung, Wohnung und Boden" 

 ("Relations of the Air to the Clothing, the Dwelling, and the Soil," 

 third edition, Brunswick, 1876) ; " Ueber den Werth der Gesundheit 

 fur eine Stadt " (" On the Value of Health to a City," Brunswick, 1873); 

 " Ueber den Gegenwartigen Stand der Cholerafrage " (" On the Pres- 

 ent Condition of the Cholera Question," Munich, 1873) ; " Kunftige 

 Prophylaxis gegen Cholera " (" Future Prophylaxis against Cholera," 

 Munich, 1875). With Buhl, Radlkofer, and Voit, he has published 

 since 1876 the " Zeitschrift fur Biologie," or " Journal of Biology." 

 Articles from him have been published in " The Popular Science Month- 

 ly " on the " Relations of the Air to our Clothing " (vol. x, p. 654) ; 

 "Relation of the Air to our Houses" (vol. xi, p. 196) ; "Ground- Air 

 in its Hygienic Relations " (vol. xi, p. 280) ; " Hygienic Influence of 

 Plants " (vol. xii, p. 417) ; and the " Sanitary Relations of the Soil " 

 (vol. xx, pp. 332, 468). 



Dr. Pettenkofer is a member of long standing of the Academy of 

 Sciences of Munich. In 1880 he received the Royal Order of the 

 Crown- 



