100 SUMMARY OF CURRENT RESEARCHES RELATING TO 



Tobacco Wilt Disease.* — Y. Uyeda, who has studied the tobacco wilt 

 disease, states that it is caused by bacteria which enter by the roots, the 

 stomata, or through wounds. The bacillus is found in the affected parts 

 in almost pure culture. The bacillus is 0*6-0 '9 //.wide and 1-1*2 /* 

 long. It usually has 8 flagella. It grows best at 32° C, and is a 

 potential anaerobe. On gelatin the growth is slow, and the pellicles, white 

 at first, gradually become black. In about five weeks the medium is 

 liquefied. In glucose agar or glucose broth it produces gas, a little acid, 

 and a rancid odour. It saponifies milk, and on potato produces a yellow 

 pigment, which gradually turns brown. On agar the colonies are round 

 and dirty white, while just beyond the medium is stained brown. 



Gradwohl, R. B. H. — Importance de l'Examen bacteriologique pratique sur 

 les Cadavres. Ann. Inst. Pasteur, xviii. (1904) pp. 767-73. 



Kuntze, W. — Beitrage zur Morphologic und Physiologic der Bakterien. (Contri- 

 butions to the morphology and pbsiology of Bacteria as exemplified in the case of 

 B. denitrificans agilis (Ampola and Garino) and B. oxalaticus (Zopf). 



Centralbl. Bakt., 2 ,c Abt., xiii. (1904) pp. 1-12 (1 pi. and 1 fig.). 



Centralb. Bakt., 2 te Abt., xiii. (1904) pp. 327-9 (3 figs.). 



