the heap is made smooth and hard and loose straw is placed in small
windrows around the manure pile about 1 foot from the edge. The
exclusion of the air, together with the high temperature and gases
formed by fermentation, tends to make the heap unfavorable for the
development of fly larvæ. Those which do happen to develop in the
surface layers will migrate and pupate in the ring of straw around the
heap, where they are destroyed by burning.


GARBAGE DISPOSAL AND TREATMENT OF MISCELLANEOUS BREEDING PLACES.

It is just as true under farm conditions as in cities that breeding
places other than horse manure must be attended to. Garbage must be
disposed of, hog and poultry manure must be cared for, and especially on
dairy farms it is extremely important that every precaution be taken to
prevent the contamination of milk by flies.

It is very desirable that all refuse possible, accumulated from cities
and towns, be burned. Incineration has been practiced successfully by a
number of towns and cities with populations of from 10,000 to 15,000 and
over. In larger cities provision should be made for burning carcasses as
well as garbage and other refuse. If city and town garbage is sold to
hog feeders the municipal authorities should have control of the
sanitary conditions about the feeding yards, as there is great danger
from fly breeding in such places if not kept clean.


SEWAGE DISPOSAL IN RELATION TO THE PREVENTION OF FLY-BORNE DISEASES.

In the consideration of these measures we have not touched upon the