Another method of disposing of manure has been recommended by English
writers. The manure is built up in a compact rectangular heap, the sides
of which are beaten hard with shovels. The ground around the edges of
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.