342 SUMMARY OF CURRENT RESEARCHES RELATING TO 



In the one case mentioned a tiny comma-like spirillum was found 

 which easily passed the filter even when only 300-400 c.cm. had been 

 drawn through. This minute organism is about the size of the influenza- 

 bacillus, but considerably smaller than the bacillus of mouse-septicaemia. 

 In Canada balsam it measured 1-3 /x long and " 1-0 ■ 3 p broad ; it 

 was a mobile form with a flagellum at one end. To it the name of 

 Spirillum parvum was given. 



Experiments were also made on the method by which the bacteria 

 got through the substance of the filter, and micro-photographs are given 

 of thin slices of the filter-substance showing the bacteria in situ. 



New Red Pigment-forming Bacillus.* — Petrow describes a 

 bacillus, found by spontaneous infection of gelatin from the air, which 

 has many analogies with Bac. Jcilieasis, and is accordingly named Bac. 

 subkiliensis. The rods are 1-1 • 2 p. long and • 8 fi thick and have 5-9 

 flagella distributed generally over the body. Spore-formation was not 

 observed. The red pigment, which is early produced, is insoluble in 

 water, but soluble in alcohol, ether, chloroform, &c. 



Question of Species in the Bacteria of Leguminous Tubercles.f — 

 H. Buhlert has continued his observations on the question of species 

 in this difficult group of bacteria. The later observations agree with 

 the former in supporting the view of the existence of species among 

 these forms. 



Epidemic of Guinea-pigs caused by a Variety of Bacterium coli.J 

 Karl Kovarzik describes a new epidemic disease of guinea-pigs observed 

 in Budapest, caused by a bacillus of the coli-group, but not, however, 

 identical with any of the described varieties of Bad. coli commune. 



Influenza-like Bacillus from a Rat.§ — Alfred Wolff, also describes 

 a bacillus, resembling very much the influenza-bacillus, which was iso- 

 lated from a purulent slimy secretion observed in the bronchi of a 

 wild rat which had died from the effects of injection of cholera-toxin. 



Influenza-like Bacillus from a Dog.|| — E. Friedberger describes 

 an influenza-like and hgemoglobinophilous bacterium obtained from the 

 diseased preputial secretion of a dog. The name Bacillus hmmoglobino- 

 philas canis is given to it. 



Micro-organism infecting small Animals in the Laboratory.^ — 

 Dr. Schwer describes a bacterium (Bad. cavisepticum) which for the 

 last three years has caused an epidemic amongst guinea-pigs, rabbits, 

 and white rats kept for laboratory purposes. In structure and staining 

 reaction the organism resembles Bacillus chohra-gallinarum, but the 

 difference in growth is so great that there is no doubt that it is a 

 distinct form. 



Leprous Affection of the Skin and Lymph-glands of Sewer 

 Rats.** — Stefansky has observed in Odessa a new disease of the sewer- 



* Arb. aus d. Bakt. Inst, der Teohn. Hochsch. Karlsruhe, ii. (1902) p. 273 (1 pi.). 

 See also Centralbl. Bakt., ix. (1902) pp. 931-2. 

 t Centralbl. Bakt., ix. (1902) pp. S92-5. 



J Op. cit., xxxiii. (1903) pp. 143-9. § Tom. cit., pp. 407-11 (1 pi.). 



U Tom. cit., pp. 401-6 (1 pi.). i Tom. cit., pp. 41-7. 



** Tom. cit., pp. 481-7 (1 pi.). 



