102 
SUMMARY OF CURRENT RESEARCHES RELATING TO 
After having demonstrated the inexactness of Koch’s criteria for the 
diagnosis of cholera, the author gives the result of his vaccination experi- 
ments on guinea-pigs, and sums up in favour of several pathogenic 
types, and in conclusion makes some remarks on the saprophytic con- 
dition of vibrios. The view expressed is that between the vibrios found 
in cholera dejecta and water vibrios there is a close alliance, and that 
possibly both may have a common origin. The virulence of vibrios is 
not retained for any length of time, their pathogenic properties, together 
with the power of forming indol and of reducing nitrates, passing off 
as the organism becomes a definite saprophyte. 
Buchner, H. — Ueber den Einfluss des Lichtes auf Bakterien und tiber die 
Selbstreinigung der Fliisse. (On the Influence of Light on Bacteria, and on the 
Self purification of Rivers.) Arch. f. Hygiene, XVII. (1893) pp. 179-204. 
Burr i, R. — Ueber einige zum Zwecke der Artcharakterisierung anzuwendende 
Bakteriologische Untersuchungsmethoden nebst Beschreibung von zwei neueu 
ans Rheinwasser isolierten Bakterien. (On some Bacteriological Investigations 
undertaken with a view to discover the characteristics of species, with the 
description of new Bacteria isolated from the water of the Rhine.) 
Arch. f. Hygiene, XFX. (1893) pp. 1-37. 
D u n b a r — TJ ntersuchungen fiber choleraahnliche Wasserbakterien. (Investigation 
of Cholera-like Aquatic Bacteria.) 
Deutscli. Med. Wochenschr., 1893, pp. 799-800. 
Gam a lei a — T he Bacterial Poisons. Translated by E. V. Hurd. 
Detroit, 1893, xiii. and 136 pp. 
G t r a r d, E. — Presence dans le penicillium glaucum d’nn ferment agissant comme 
l’emulsine. (Presence in P. glaucum of a Ferment which acts like emulsin.) 
Compt. Rend. Soc. Biol., 1893, pp. 651-3. 
Gottstein, A. — Ueber die Zerlegnng des WasserstofFsuperoxyds durch die Zellen, 
mit Bemerkungen fiber eine makroskopische Reaktion ffir Bakterien. (On the 
Destruction of Peroxide of Hydrogen by Cells, with Remarks on a Macroscopic 
Reaction for Bacteria.) 
Arch.f. Pathol. Anat. u. Physiol., CXXXIII. (1893) pp. 295-307, 
Hesse, W. — Ueber die gasformigen Stoffwechselprodnkte beim Wachstum der 
Bakterien. (On the Gaseous Products of Metabolism in the Growth of Bacteria.) 
Zeitschr.f. Hygiene, XV. (1893) pp. 17-37. 
Johne — Z ur Kenntnis der Morphologie der Milzbrandbacillen. (On the Morphology 
of Anthrax Bacilli.) Deutsch. Zeitschr.f. Tiermed ., XIX. (1893) pp. 244-60. 
Kiessling, F. — Das Bacterium coli commune. Zusammenfassendes Referat. 
(General Report on B. coli commune.') 
Hygien. Rundschau, 1893, pp. 724-43 and 765-91. 
Knorr, R. — Beitrag zur Lehre von der Identitat des Streptococcus pyogenes und 
des Streptococcus erysipelatis. (On the Identity of S. pyogenes and S. erysipelatis.) 
Bert. Klin. Wochenschr., 1893, pp. 699-700. 
Marot, F. — Un Streptocoque a culture apparente sur pomme de terre. (A Strepto- 
coccus cultivated on the potato.) 
Arch, de Med. Exp€r. et d' Anat. Pathol., 1893, pp. 548-62. 
Podwyssozski, W. W. — Zur Morphologie der Cholera vibrionen. (On the 
Morphology of Cholera Vibrios.) Centralhl. f. Allg. Pathol., 1893, pp. 673-82. 
R u bn er— V ibrio Berolinensis, ein neuer Kommabacillus. (F. Berolinensis, a new 
Comma Bacillus.) Hygien. Rundschau, 1893, pp. 717-9. 
Sanfelice, F.—Untersuchungen tiber anaerobe Mikroorganismen. (Researches 
on Anaerobic Micro-organisms.) Zeitschr.f. Hygiene , XIV. (1893) pp. 339-92. 
Stutzer, A., & O. Knoblauch — U ntersuchungen tiber den Bakteriengehalt 
des Rheinwassers oberhalb und unterhalb der Stadt Koln. (Investigations on 
the Bacteria of the Rhine above and below Cologne.) 
Festschr. d. Niederrhein. Vereins f. 6. Gesundheitspfl., 1893, pp. 95-120. 
