UTILIZATION OF WASTE SEED FROM THE TOMATO. 
15 
was reduced, respectively, to 
35.6, 21.9, and 9.6 per cent. In 
a fifth passage through the drier 
the moisture was reduced to 3.1 
per cent. 
It is, of course, apparent that 
a large commercial drier of this 
type (fig. 9) would be mate- 
rially longer than the experi- 
mental drier, and probably one 
passage of the seed through the 
machine would reduce the mois- 
ture to about 10 per cent, which 
would be sufficient for subse- 
quent oil extraction. 
It is thus evident that one 
workman could handle the 
whole operation of seed treat- 
ment from the seed-washing 
cyclone through the moisture 
expellcr and drier to the 
storage-bin conveyors. 
THE USE OF EXHAUST STEAM 
COMPARED WITH LIVE 
STEAM.* 
The advisability of using ex- 
haust steam for heating the air 
with which to dry the seed de- 
pends (1) upon the other uses to 
which the available steam might 
be put and (2) upon the cost of 
producing live steam. Data 
from seed-drying plants show 
that with air heated to about 
185° F. delivered at a rate of 
2,000 cubic feet per minute the 
seed from a 5,000-basket pulp- 
ing station may be dried in an 
eight-hour day. The quantity 
of steam necessary for this heat- 
ing is 250 pounds an hour. 
'ontributed by J. C. Sruallwood, Johns Hopkins University. 
