Lime-Sulphur Concentrate. 21 
tain loss due to evaporation, and the live steam not only serves to 
keep the liquid at the boiling point but supplies the necessary “ make- 
up” at the same temperature. If a closed coil is used, much more 
pipe 1s required in the cooking tank. 
Inexpensive steam lime-sulphur orchard cooking plants are quite 
common and exist in a variety of forms. Figure 13 shows an inex- 
pensive and usual arrangement in- 
volving the use of 2 steam boiler. 
Two forms of steam jet pipes for 
an installation of this type are 
shown-in Figure 14. The type 
shown in B is preferable because 
there is no piping in the upper 
part of the barrel to interfere with 
hand stirring or agitation. In 
some plants of this type the out- 
lets of the several barrels are con-  F1¢. 14.—tT'wo forms of steam jet pipes 
5 : 5 for cooking lime-sulphur in barrels. 
nected into one main pipe (Fig. The steam connection for B is prefer- 
isyerunnine along the front. “Sepa. 2Me t tat or 4. 
arate outlets are preferable to avoid clogging of the main pipe with 
sludge. 
Figure 16 shows another orchard plant of this type. The condition 
of this plant indicates frequent boiling over of the concentrate with 
a consequent loss which in the aggregate is quite appreciable. With 
plants of this type the concentrate must be dipped out of the barrels, 
a procedure that should be avoided if possible. A platform, as shown 
in Figures 13 and 15, high enough to permit filling the spray tank 
directly from the boiling vessel adds ereatly to the efficient operation 
Fig. 15.—This lime-sulphur cooking plant is of the type shown in Figure 13. The 
_ boiling must be carefully watched but otherwise it is a very good arrangmeent. It 
differs from the plant shown in Figure 13 chiefly in that the barreis all empty into 
one main line with an outlet at the end of the platform. 
