8 
The Economical Application 
it will be seen that the only fixed underground pipes recjuired 
are from A to B ; the total lengths will stand thus : — 
Yards. 
A to B, 4 in. diameter cast-iron, say 156 
Pipes from pumps to ground, ditto, ditto 50 
A to cl '"^ in. diameter 220 
„ D to D', 2 J in. diameter galvanised iron .. 80 
„ D' to E, 2| in. diameter gutta percha .. 50 
556 
Tanks for holding the liquid manure should be provided 
before the winter season commences, so that all the manure may 
be scrupulously collected and saved. If the investment is made 
by the landlord, on which the tenant is to pay a percentage, 
circular tanks of brick set in cement, 12 to 14 feet deep, will be 
found economical and convenient. If the tenant makes the 
outlay himself on the strength of a long lease, a cheaper expe- 
dient might be resorted to. I made two cheap tanks, which, 
answered the purpose well ; they were faced with rough outside 
slabs of wood, supported by frames, and well packed behind 
with dry black loam. Their size will be determined by the 
number of cattle stall-fed through the winter, which in the 
instance before us we will assume to be 50 head ; in fact, that 
number may be kept in the stall all the year round. The liquid 
will be stored from November to March, and the quantity 
obtained will be not far from 5 gallons per head per day, besides 
that which will be absorbed by litter. This calculation is made 
on the supposition that boards are adopted, or some such plan 
having the same end in view, so that the cattle will require but a 
small quantity of straw for bedding, say from 3 to 4 lbs. per head 
per day. It will be found that by the beginning of March 28,000 
gallons of pure liquid manure will have been collected ; and to 
contain the greater part of this a tank should be provided hold- 
ing 25,000 gallons. Another similar tank will also be needed for 
mixing the water and manure, connected with the former at the 
bottom by a pipe, and provided with a valve for regulating the dilu- 
tion. The contents of the tanks may therefore be 25,000 gallons 
each. The size of these tanks will be 21 feet diameter and 12 feet 
deep, inside measurement. A small well should be placed at the 
bottom of the mixing-tank to receive the suction-pipe, so that 
all the matter capable of being removed in suspension may be 
pumped out at each operation. The end of the pipe must be 
secured against the admission of substances likely to stick in the 
valves ; and an easy mode of effecting this is by covering the 
well with a perforated board, or the end of the pipe with a gutta- 
percha bottle perforated. 
