20 E. J. BUTLER. 
Neocosmospora were found on the roots of wilted plants from the 
Central Provinces and Sind. 
In the Central Provinces the disease is said to have been known 
for the past 50 years. It appears to have become more severe re- 
cently, possibly as suggested by Evans (16) because, owing to the 
recent cotton boom, the crop has been grown without proper 
attention to rotation. In parts of the Saoner tract it was 
estimated that 5 per cent. of the crop was killed in places in 
1907. In Akola the percentage of deaths was 30 on an area of 80 
acres severely affected in 1908. It was noticed that varieties of 
Gossypium neglectum and G. indicum are chiefly attacked, G. 
hirsutum, as represented by the kind known as burt, an upland 
Georgian type, being immune. 
In Akola the wilting began soon after germination and went 
on progressing from the originally attacked plants all through 
the season. Details of the attack on the Nagpur Experimental 
Farm in 1907 are given in Evans’ note just mentioned. 
The examination of the specimens sent in from these two 
localities disclosed a condition entirely agreeing with the pub- 
lished descriptions of the disease in the United States. The Akola 
specimens were young plants, and externally appeared sound except 
for a discolouration of the bark at the base of the stem and on the 
tap root. On removing this the tissues below were found blacken- 
ed just as in pigeon-pea wilt, and sections showed that many of the 
xylem vessels were quite choked with hyphz. On these microco- 
nidia, quite agreeing with those figured by Smith, were found. 
Chlamydospores similar to those formed by many Fusaria were 
also formed within the vessels and Fusarium beds were common 
on the bark. There is practically no doubt that the disease is a 
Fusarium wilt, and it cannot be distinguished from that of the 
United States and Egypt. 
SERIES XI. 
(a) Cotton inoculated with Neocosmospora vasinfecta from 
cotton. The culture used was one of the earliest of the series 
mentioned under Series X, 
