US 
a farm, with us it must be a village; so too the system of Govern- 
ment is such that we can work with such units, and it is the reason 
why, where among farmers you might have compulsion by law, 
you have in India persuasion by Government officers backed by a 
refusal to remit the revenue if the crop is deficient and if no meas- 
ures have been taken for the common good. In case of loss of crop 
from any cause the proper officers must be convinced in order that 
the full assessment of land revenue or rent may not be taken and 
to secure remission : if the proper officers are convinced that the 
measures to be enforced are really workable and efficient, they 
have means of exerting powerful influence, and it is usually poss- 
ible to get action taken on a very large scale, provided the remedy 
is shown to be really worth while. There is no legislation on this 
subject as in some other countries, and it is not required. The 
following are some cases that have occurred of the successful 
application of remedial measures on a large scale. 
In 1903-1904, the Bombay Locust occupied 12,000 square miles 
of Bombay and then spread out over 140,000 miles to lay eggs. In 
this case, all the districts involved took the matter up, with advice 
and instructions from the entomological staff. In this case the 
whole staff of Government subordinates is used if necessary, and 
the European officials in charge of districts were hard at work. The 
main things done were to destroy the Locusts at night when they 
were torpid, to collect coupling Locusts, to mark down egglaving 
places and collect eggs, and to destroy the Hoppers. For practically 
all these Government offered rewards fixed from week to week; 
for instance, for young Hoppers, as much as è annas (pence) per 
pound was paid, but as the Hoppers got larger, this was reduced 
gradually to 2 annas or 1 anna. The bag-method, then invent- 
ed, was and has since been most valuable, and probably by far the 
most useful discovery in applied entomology as it affects India, as 
it isused for a great variety of pests. Very largely the action of the 
officials was to let all know about the rewards, to stimulate the 
people to collect, and to pay the rewards. In all £ 14,000 was paid 
out in the form of rewards. A full account was published (« Mem. 
Agric. Dept. Entom. », vol. I, n° 1), and the reader should especially 
note Appendix A, which gives a very good idea of the extraor- 
dinary efficiency of the Government machinery in India. 
HAIRY CATERPILLARS. — In particular tracts, a noted pest is 
the swarms of Arctiid Caterpillars that appear regularly soon after 
