240 
p to cultivators as seed in the hope that the sets from hard 
from a distant soil might prove sufficiently robust to resist 
the infection, at T for some sen, Mr. Mollison, the Superintendent 
of Farms, gave special attention to this experiment, and also tried the 
t 
were naturally those sown with the Mahábaleshvar seed, it not being 
kno ore that the hill district was already infected. The only 
office at Khed, and in a garden hitherto“used for “ pan ” (Piper betel). 
Neither of these two grounds had been under potato ag some years 
certainly, AH the other crops exhibited the characteristic 
So. — with these experiments a field was sown at 
Khandesh Government farm with Poona seed, which appeared to 
Pk sound. Some of the seed potatoes were kept for further 
examination. Khandesh is not a potato district, and the land sown had 
never been under potato before. ico erop was diseased sit site 
proving that the seed was infected, though, Viii sown, the signs 
disease were not distinguishable by the eye. On examination of ie 
seed potatoes which had been stored the characteristic "- and a mottled 
unhealthy condition of the flesh were plainly apparen r. Mollison 
found in the diseased ET indications cf a fungus which E opesrod to 
attack the green stem firs 
4. At the Poona farm E varieties of ae potatoes received from 
Messrs. Sutton and Sons were planted side zby side with Poona potatoes, 
selected for apparent soundness, on lan t before used for this crop. 
The English seed of all vari — Pdl; a quem and healthy crop and 
has been reserved as seed for further experiment. The local potatoes 
diseased, but not wert so, and were marketable, In this experi- 
ment all the "potatoes were planted in ridge-rows as in England, the 
irrigation water being directed along the furrows. 
5. A small quantity of true seed (from inflorescence) was obtained 
from ios. and was also tried at this farm. Hue object of gro 
from the true seed is to establish a strong and natural stock, such as in 
Nac is s ey stemadionlly resorted to when ies artificial strains have 
shown a tendency to weakness, is wx oie is being continued, 
but conclusions cannot be drawn at this earl 
pecimens of D in various stages oF aitkciéns have been sub- 
mitted by Mr. Mollison to Dr. Cunningham, the Yen Assistant to the 
Sanitary Dnisiteiódir ih the Government of India, who has under- 
taken a scientific investigation of the blight. I ave. D Cunningham's 
tions after more complete M prd Dr. Cunnin te wri tae 
* You are quite right in distinguishing this affec 
* potato blight, for ne are no signs of Phytophthora abou f the “plait, 
“ So far as I can ascertain, it is essentially due to an invasion of the 
- 4 Vascular bundles ‘of ‘the fies of the haulm by “tanga! mm which 
* is to be found in all the elements of the bundles, a 
