38 THE JOLA OR DECCAN GRASSHOPPER 
rupees for one complete treatment of the twenty-eight 
acres. Supposing four treatments at intervals of a week 
to be necessary, we have a total expenditure of Rs. 28 for 
the twenty-eight acres, or at the rate of one rupee per 
acre. If we take into account the cost of the bag and fix 
it at the high rate of two rupees, the expense per acre 
would be increasd by about one anna. 
In the majority of cases, a raiyat would not have as 
much as twenty-eight acres, so that the expense per acre 
would be slightly more on account of the initial outlay 
for the bag. The bag would, however, in neither case be 
worn out and the material could be used for other purposes, 
or the bag could be kept for another year’s work. 
It seems safe to say that the expenses connected 
with bagging operations will hardly exceed one rupee per 
acre Where co-operation exists and the work is done at 
the right time. There is no reason why this work can- 
not be done by boys, in which case the bag might be made 
somewhat smaller. The expenses would be thereby re- 
duced and, where the work is done by members of the 
raivyat’s own family, the actual money outlay would be 
simply for the purchase of materials to make the bags. 
GENERAL CONCLUSIONS 
1. The Jola or Deccan Grasshopper is a new pest 
which has probably entered Mysore from Dharwar Dis- 
trict, Bombay Presidency. It first appeared in Mysore 
four or five years ago, and has been becoming each year 
more destructive. 
2. The grasshopper has already appeared in areas 
of Honnali and Channagiri Taluks, Shimoga District, and 
of Davangere, Jagalur and Chitaldrug Taluks, Chitaldrug 
District. The total area infested is “between 15 000 and 
20,000 acres. 
3. Although this insect cannot fly, there is great 
danger of its being spread by means of carts travelling 
from infested to uninfested districts. It is, moreover, 
quite capable of spreading slowly of its own accord, so, un- 
less energetic measures are taken to check it, it is likely 
eradually. to spread throughout the State wherever dry 
land cereals are grown, 
