266 flow to obtain tt. 
should be built. They are simply wooden houses, with an upper 
compartment, into which the meat should be put. The bottom 
of this chamber ought to be made of wooden slats, or, if preferred, 
an iron grating can be used. The object of this will be seen at 
a glance. It is for the maggots to drop through. A wooden tray 
is placed underneath to receive them, and this tray should be 
about two or three inches deep, and two of its sides should slant 
outwards at an angle of about forty-five degrees. In addition to 
maggots it receives also the juices which drop from the meat, and 
it should therefore be made perfectly tight. The maggots crawl 
easily over the sloping sides, and drop down on to the bottom 
floor of the maggot house or factory, which should be covered 
with an inch or more of fine dry sand. The grubs roll themselves 
in this, and become thoroughly cleaned, and are raked out into a 
receiver of any convenient kind, and the sand riddled out, dried, and 
used again. Then they are put into a tub or a box and mixed 
with a fair quantity of fine meal and dry sand. In the course of 
twenty-four hours the meal is consumed by the maggots, which 
are very much improved thereby, and the dry sand with which it 
is mixed prevents them working it up into a paste, and also helps 
to scour them still further. The sand is then riddled out again, 
and the grubs are scalded, and after this preparation look 
delicious, and are most tempting morsels for hungry trout. The 
trout think so too, evidently, by the way in which they take them 
when thrown into the ponds. 
In addition to the maggots, which may easily be produced in 
large masses, a great quantity of food can be provided in the 
shape of tadpoles. In spring many tons of frog spawn are 
collected and placed to hatch in ponds about two or three feet 
deep. When the hatching takes place these ponds are black with 
tadpoles, and as there are a great many more than nature can 
provide for, they must be fed. The scraps of meat which later in the 
season go to the maggot factory are now used for fattening tadpoles. 
They are voracious little beings, and will eat any carrion which is 
thrown to them. They do not like much running water, but a 
very gentle flow should be kept going through the ponds, in order 
to prevent contamination by the decomposition of the meat. 
They eat ravenously and grow amazingly, and in a few weeks get 
