HYDROGEN SULPHIDE, ETC.; ACTION OF LIGHT ON BACTERIA. 



243 



CP3)- PETRI, R. J., UND MAASSEN, ALBERT. Beltriige 

 zur Biologic der krankheitserregenden Bak- 

 terien ins besondere iiber die Bildung von 

 Schwefelwasserstoff durch dieselben unter 

 vornehmlicher Berucksichtigiing des Schwei- 

 nerothlaufs. Arbeiten aus de.m Kaiserl. 

 Gesundheitsamte, Bd. vm, 1893, pp. 318-356. 



Many parasitic aud saprophytic forms have been tested. 

 All produce sulphuretted hydrogen wheii cultivated in 

 presence of suitable sulphur compounds, i. e., such as are 

 loosely bound. The reduction of litrnns and indigo in 

 solid cultures is ascribed to this gas. It is believed that 

 all bacteria are capable of producing it, and that the dis- 

 tinction into producers aud non-producers of sulphur- 

 etted hydrogen must be abandor-ed. 



('93)- PETRI, R. J., UND MAASSEN, ALBERT. Weitere 

 Beitrage zur Schwefelwasserstoffbildung 

 aerober Bakterien und kurze Angaben iiber 

 Merkaptanbildung derselben. Anbeken aus 

 dem Kaiserlichen Gesundheitsamte, Bd. vm, 

 1893, pp. 490-506. 



('93)- RUBNER, M. Ueber dais Vorkommen von Mer- 

 c.iptan. Archiv. f. Hyg., 1893, Bd. xix, pp. 

 136-193. 



('94). WENZELL, W. T. A contribution to the 

 knowledge of bacteriologic chemistry. Jour. 

 Am. Med. Asso., 1894, vol. xxm, pp. 901- 



903. 



('96). DUCLAUX, E. Stir les odeurs de putrefaction. 



Revue critique Ann. de 1'Inst. Pasteur, T. 



x. 1896. pp. 59 to 64. 

 ('97). MORRIS, MAX. Studien iiber die Produktion 



von Schwefelwasserstoff, Indol und Merkap- 



tan hei Bakterien. Arch. f. Hyg., xxx Bd., 



1897. PP. 304-3". 



Mercaptan was demonstrated by use of " isatinschwe- 

 felsaure," which is colored green by this substance. 



I '(>_). BANNING, FRIEDRICH. Zur Kenntniss der Oxal- 

 saurebildung durch Bakterien. Centralb. f. 

 Bakt., Abt. 2, Bd. vm, 1902. pp. 520-525, pp. 

 556-567, mit I Taf. 



('77) 



C/S). 



(,'Si). 



XXIX. Action of Light on Bacteria. 



DOWNES AND BLUNT. Researches on the ef- 

 fect of 'light upon bacteria and other organ- 

 isms. Proc. Roy. Soc., vol. xxvi, No. 184, 

 1877, 6 Dec., pp. 488-500. London. 

 Downes and Blunt determined germicidal action to be 

 associated chiefly with the actinic rays of the spectrum. 



i. DOWNES AND BLUNT. On the influence of 

 light upon protoplasm. Proc. Roy. Soc., vol. 

 xxvin. No. 191, 1878, 19 Dec., pp. 199-212. 

 TYNDALL, J. Note on the influence exercised 

 by light on organic infusions. Proc. Roy. 

 Soc., London, vol. xxvm, pp. 212-217. Na- 

 ture. vol. xix, 1879, p. 210. 



Negative results. Used flasks, and organisms grew 

 after exposure to sunlight. 



TYNDALL, JOHN. On the arrestation of in- 

 fusorial life by solar light. Br. asso. for the 

 .advancement of sci. Rep., 1881, pp. 450-451. 

 Nature, vol. xxiv, p. 466, 1881. 



Tyndall's results were due to the way in which he 

 experimented, i. e., with flask cultures. 



('82). ENGELMANN, TH. W. Bacterium photome- 

 tricum. Ein Beitrag zur vergleichenden 

 physiologie des Licht- und Farbensinnes. 

 Onderzoekingen gedaan in het Physiologisch 

 Laboratorium der Utreditsche Hoogeschool, 

 Derde Reeks, vn, Aflev. n, 1882, pp. 252- 

 290, I plate. 



('84). DOWNES, A., AND BLUNT, T. P. The influence 

 of light on bacteria. Trans. Roy. Soc., Vic- 

 toria, vol. xx, pp. 1-2, 1884. 

 Reply to Jamieson. 



('85). DUCLAUX, E. Influence de la lumiere du soleil 



sur la vitalite des germes de microbes. C. 



R. des se. de 1'Acad. des sci. T. C., 1885, 



pp. 119-121. 

 ('85). DUCLAUX, E. Influence de la lumiere du soleil 



stir la vitalite des micrococcus. C. R. des 



se. de 1'Acad. des sci., Paris, T. ci, 1885, pp. 



395-397- 

 ('86). ARLOING, S. Influence de la lumiere blanche 



et de ses rayons constituants sur le devel- 



oppement et les proprietes du Bacillus an- 



thracis. Arch, de physiol. normale et pathol., 



1886, 3 ser., T. vn, pp. 209-235. 

 ('86). STRAUS, I. Note sur 1'action de la lurniere 



solaire sur les spores du Bacillus anthracis. 



C. R. des ise. et mom. de la soc. de Biologie. 



Paris, 8 se., T. in, 1886, pp. 473-474. 

 ('86). DOWNES, ARTHUR. On the action of sunlight 



on Micro-organisms with a demonstration 



of the influence of diffused light. Proceed- 

 ings of the R. Society, London, 1886, vol. 



XL, pp. 14-22. 

 ('87). DUCLAUX, E. Action de la 'lumiere sur les 



microbes. Ann. de 1'Inst. Pasteur, 1887, T. 



i, pp. 88-92. 

 ('87). Roux, E. De 1'actioii de la .hwniere et de 1'air 



sur les spores de Ja bacteridie du charbon. 



Ann. de 1'Inst. Pasteur, T. I, 1887, pp. 445- 



452. 

 ('88). ENGELMANN, TH. W. Die Ptirptirbakterien 



und ihre Beziehungen zum Lichte. Bat. 



Zeitung, iSSS, Jahrgang XLVI, col. 661, 677, 



693, and 709. 

 ('88). ENGELMANN, TH. W. Ueber Baeteriopurpurin 



und seine physiologische Bedeutung. 



Pfliiger's Archiv,, "1888, Bd. XLII, pp. 183-186. 

 ('89). RAUM, JOHANNES. Der gegenwartige Stand 



unscrer Kenntnisse iiber den Einfluss des 



Liclites anf Bacterien und auf den thier- 



ischen Organismtis. Zit. f. Hyg., Bd. vi, 



1889, pp. 312-368. 

 This paper contains a bibliography of 7 pages. 



('Mo). PANSINI, S. Dell'azirine della luce solare sui 

 microorganismi. Revista d'igiene practica 

 e speriinentale, Napoli, 1889, pp. 69-101. Re- 

 view in Ann. de Micr.. 1890, p. 516. 



('90"). SAVKRIU. I/intluenza della temperatura sull' 

 a/rione microbicida della luce. Ann. dell" 

 Inst. d'ig. di Roma. 



Not seen. 



Cyo). JANOWSKI, TH. Zur Biologic der Typhus- 

 -badllen. Centralb. f. Bakt., vm Bd., 1890, 

 pp. 167-172, 193-199, 230-234, and 262-266. 

 Discusses the action of sunlight. 



('in). GEISLER, F. K. On the action of light on bac- 

 teria. (Russian.) Wratsch, 1891, No. 36, 

 Pp. 793-797 

 Not seen. 



('92). MOMONT. See xxxv. 



('92). KOTLJAR, E. Zur Frage iiber den Einfluss des 



Lichtes auf Bakterien. Wratsch. 1892, Nos. 



39 and 40. Rev. in Centralb. f. Bakt., xn 



Bd., 1892. p. 836. Also in Ann. de 1'Inst. 



Pasteur, T. vn, 1893, p. 430. 



