PIGMENTS; REDUCTION AND OXIDATION; NITRIFICATION, ETC. 239 



Coo). KRAUSE. See xv. 



('oo). CHAMOT, E. M., AND THIRY, G. Studies on 



chromogenic bacteria. I. Notes on the 



pigment of Bacillus polychromogenes. Bot. 

 , vol. xxx, 1900, pp. 378-393. 16 figs. 



Also a separate. 

 Coi). GKSSARD, C. Variete melanogene du bacille 



pyocyanique. Ann. de 1'Inst. Pasteur, T. 



xv, 1901. pp. 817-831. 

 Ccul. GESSARD, C. Essai sur la biologie du bacille 



pyocyanique. Ann. Inst. Pasteur, Paris, T. 



xvi, 1902, pp. 313-330. 

 (Y>j). PETROW, N. Uber einen neuen roten Farb- 



stoff-bildenden Bacillus. Arb. a. d. Bact. 



Institut der tecbn. Hochschule zu Karlsruhe, 



it Bd., 3 Heft, 1902, pp. 271-291, with i plate. 



Describes Bacillus subkilieusis. 



('02). LoEW, O., AND KOZAI, Y. Ueber Ernahrungs- 

 verhaltnisse beim Bacillus prodigiosus. Bull, 

 of the College of Agric., Tokyo Imperial 

 Univ., vol. v, 1902, No. 2, pp. 137-141. Also 

 a separate. 



A favorable medium for production of pigment and 

 bacteriolytic enzyme is composed of peptone i percent, 

 sodium acetate 0.2 per cent, and asparagin 0.2 per cent in 

 water. 



('03). MARSH. See vi. 



('03). PAPENHAUSEN, HUBERT. Uber die Bedingun- 

 gen der Farbstoffbildung bei den Bakterien. 

 Arb. a. d. Bact. Inst. der tech. Hochschule 

 zu Karlsruhe, in Bd., I Heft, 1903, pp. 43-79. 

 Bibliog. of 20 titles. 



T \veuty-two species experimented upon. Oxygen is 

 very necessary for the production of the pigments. The 

 other conditions for optimum production of pigment vary 

 greatly in different species. 



('04). HEFFERAN, MARY. A comparative and ex- 

 perimental study of bacilli producing red 

 pigment. A dissertation submitted to the 

 faculties of the Graduate Schools of Arts, 

 Literature and Science, in candidacy for the 

 degree of Doctor of Philosophy. The Uni- 

 versity of Chicago. Printed in Jena by 

 Gustav Fischer, 1904, pp. 55. Bibliog. of 77 

 tides. 



('04). LEONARD, ETHEL L. Bacterium cyaneum : A 

 new chromogenic organism. The Johns 

 Hopkins Hospital Bulletin, vol. xv, 1904, 

 pp. 398-400. 



XXIV. Reduction and Oxidation. 



('^7). SPINA, A. Bacteriologische Versuche mit 

 gefarbten Nahrsubstanzen. Centralb. f. 

 Bakt., ii Bd.. Jena, 1887, Nos. 2-3, pp. 71-75. 



Reduction processes of bacteria in presence of methy- 

 leu blue, etc. 



t'S/). CAHEN, FRITZ. Ueber das Reduktionsver- 

 mogen der Bakterien. Zeitschr. f Hyg , 

 Bd. n, 1887, PP. 386-396. 



Cgi). WlNOGRADSKY. Se XXV. 



('94). FERMI, CLAUDIO, AND MONTESANO, GIUSEPPE. 

 Ueber die Dekomposition des Amygdalins 

 'durch Mikroorganismen. Centralb. f. Bakt., 

 Bd. xv. 1894, pp. 722-727. 



('96). SMITH. THEOBALD. Reduktionsersoheinungeu 

 bei Bakterien und ihre Beziehungen zur 

 Baktcrienzelle, nebst Bemerkungen iiber Re- 

 duktionserscheinungen in steriler Bouillon. 

 Centralb. f. Bakt., xix Bd., 1896, pp. 181-187. 



('99). MUELLER, FRIEDR. Ueber reduzierende Eigen- 

 schaften von Bakterien. Centralb. f. Bakt., 

 xxvi Bd., 1899, pp. 51-63. 



TliL- pigment used must be soluble in water, and must 

 iint poison the bacteria. Author uses methyleue blue 

 and litmus. Under literature, n papers are cited. 



('99). ROTHBERGEK. See xviii. 



('99). MUELLER, FRIEDRICH. Ueber das Reduktions- 



vermogen der Bakterien. Centralb. f. Bakt., 



xxvi Bd., 1899, pp. 801-819. 



Author used methyleue blue, litmus, indigo-carmiu and 

 rosanilin acetate in various media with many organisms. 



C'oi). GRAN. See xxv. 



('02). CATHCART, EUUARD, UND HAHN, MARTIN. 

 Ueber die reduzierenden Wirkungen der 

 Bakterien. Arch. Hyg., Miinchen, Bd. XLIV, 

 1902, pp. 295-321. 



('02). EMMERLING, OSCAR. Die Zersetzung stick- 

 stofffreier organischer Substanzen durch 

 Bakterien. Braunschweig (F. Vie\veg & 

 S.), 1902, pp. ix, 141, mit 7 Taf. 

 Not seen. 



('03). VAN DELDEN, A. Beitrag zur Kenntniss der 

 Sulfatreduction durch Bacterien. Centralb. 

 f. Bakt., 2 Abt., xi Bd., 1903, pp. 81-94 and 

 113-119, i heliotype pi. 



XXV. Nitrifying and Denitrifying Organisms, 

 Use of Free Nitrogen. 



('66). WORONIN. Ueber die bed der Sohwarzerle und 

 der igewohnlichen Lupine auftretenden 

 Wurzelanschwellungen. Memoires de 



1'Acad. imp. St. Petersb., 7 Serie, T. x, 1866. 

 See also Ann. des sci. nat. Bot., 5 se., T. VH, 

 pp. 73-86, i plate. 



('77). SCHLOESING, TH., ET MUENTZ, A. Sur la 

 nitrification par les ferments organises. C. 

 R. des se. de 1'Acad. des sci., Paris, 1877, 

 T. LXXXIV, p. 301 ; and T. LXXXV, p. 1,018. 



('79). SCHLOESING, TH., ET MUENTZ, A. Recherches 

 suf la nitrification. C. R. des se. de 1'Acad. 

 des sci., Paris, T. LXXXIX, 1879, pp. 891-894 

 and 1,074-1,077. 



('82). DEHERAN ET MAQUENNE. Sur la reduction 

 des nitrates dans la terre arable. C. R. des 

 se. de 1'Acad. des sci., 1882, T. xcv, pp. 691- 

 693, 732-734, 854-856. 



('82). DUPETIT, G., ET GAYON, U. Sur la fermenta- 

 tion des nitrates. C. R. des se. de 1'Acad. 

 des sci., T. xcv, pp. 644-646, Paris, 1882. 



('82). DUPETIT, G., ET GAYON, U. Sur la transforma- 

 tion des nitrates en nitrites. C. R. des se. 

 de 1'Acad. des sci., T. xcv, Paris, 1882, pp. 

 1,365-1,367. 



('83). DUPETIT, G., ET GAYON, U. Quelques-unes des 

 conditions les plus favorables a la fermenta- 

 tion des nitrates. Mem. de la soc. des sci. 

 physiques et naturelles de Bordeaux, 2 se., 

 T. v, 1883, Extr. Proces-verbaux se. du 23 

 nov., 1882, pp. ni-iv. 



('83). SPRINGER, A. Reduction of nitrates by fer- 

 ments. Am. Chem. Jour., vol. rv, pp. 452- 

 453, 1883. 



('86). GAYON ET DUPETIT. Recherches sur la reduc- 

 tion des nitrates par les infiniments petits., 

 1886. Paris? Publisher? 

 Not seen. 



