130 Flow to obtain it. 
So much for the house—now about the furniture. A glance 
at the accompanying illustration will give a general idea as to 
what is required. First of all, two distributing tanks. These are 
two long wooden boxes or troughs which receive the water from 
the filters, one being used for distributing the spring water to the 
hatching boxes, and the other being used for the brook water. 
Place them overhead if practicable, but in cases where the water 
cannot be got up to that level, they may be placed three or three 
and a half feet above the floor. In the latter case a series of 
round holes one inch in diameter, and short tin or lead pipes 
four inches. long will be all that is needful for supplying the 
hatching boxes. Bore a hole, and fix a pipe so as to deliver the 
water into the upper end of each hatching box or set of boxes, 
which must be placed just below the bottom level of the distribu- 
ting tank. Regulate the supply by a small piece of tin or wood, 
sliding in a grove made by nailing two slabs on to the inside of 
the tank. The tanks themselves may be nine inches wide by nine 
inches in depth. 
The advantage of placing the tank overhead where practicable 
is that it allows the operators to pass along that end of the hatchery, 
which is a consideration when each range of boxes is close on 
eighty feet long. The outlets for supplying the hatching boxes 
can then be made in the bottom of the distributing tank, and by 
using short pieces of lead pipe, each with a flange a quarter of an 
inch from the end, for nailing to the inside bottom of the distri- 
buting tank, a screw-tap can be attached, which is a great con- 
venience in regulating the water, and on the whole better than 
the small-scale sluice already alluded to. Fix a short piece of 
indiarubber hose pipe on to the tap and the whole is complete. 
Take care that all is well seasoned before using the water. 
The hatching boxes are very simple contrivances, but require: 
to be properly made or they may be found not to answer their 
purpose satisfactorily. A very good size to make them is twelve 
feet long, by nine inches wide, and six deep. At the inlet end 
fix a board across the box at a moderate angle, and reaching 
down to within an inch of the bottom. This serves to break the 
force of the water and prevents it from washing the eggs off the 
grilles. At the other end, in the centre of the bottom, and two 
