system will be acknowledged as the most commendable 
one. 
(¢) ADVANTAGES & DisapvaNTAGES oF RoUND CAKE SYSTEM 
The round cake system or the hydraulic system, com- 
pared with the two others, is the most primitive, considered 
from both the oil rate and the quality of the residue. Why 
this system predominates among the oil mills in Manchuria 
at present is because of the following: 
(1) Round cake system requires only simple equip- 
ments and operation, thereby saving the cost of production. 
(2) Round cake being hard and solid, it needs no 
receptacle for transportation and storage. When laden in 
the ship’s hold, it is easy to harmonize both space and 
weight, since either can be readily regulated by the number 
of pieces. 
SECTION IV.—OIL MILLS IN MANCHURIA 
Dairen and Harbin are the two places in Manchuria 
that contain bean mills equipped with comparatively 
advanced machines and which can supply bean residus and 
bean oil as international commodities at moderate rates and 
further in a large amount. For the rest, all still remain 
on g nearly primitive footing, not being able to rise above 
the stage in which the produces were meant chiefly for 
local consumption. 
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