UTILIZATION OF WASTE SEED EROM THE TOMATO. 
depending, of course, on the size and duration of the cycle. It will 
be noted that the above methods are not continuous and that they 
require the entire attention of the operator. 
A moisture expeller (figs. 4 and 5) has been successfully applied 
in this operation. The machine is essentially similar to an oil ex- 
peller, consisting of a horizontal barrel composed of bars bolted 
together, along the longitudinal axis of which rotates a screw. This 
latter carriers the charge of wet seed forward and discharges it over 
a cone in the outlet of the barrel. By adjusting this cone in the throat 
of the barrel the degree of pressure, and consequently the extent of 
moisture reduction, can be regulated. 
Fig. 4. — An experimental moisture expeller ; Closed. 
The machine does not operate on unwashed seed, as the slippery 
character of the" latter causes it merely to churn. It is absolutely 
necessary that the seed be denuded of this coating material, and pref- 
erably pressed hot. All of this can be accomplished, of course, by 
washing the seed in hot water and pressing it immediately. By such 
procedure the moisture content can be reduced from 65 to about 52 
per cent. The operation is continuous and does not need the constant 
attention of the operator; in fact, after being adjusted at the begin- 
ning of the run it operates without further change, except possibly 
a slight adjustment from time to time because of the varying char- 
acter of the seed. Among its other advantages is the fact that owing 
17780°— 21 2 
