gram, of unpolished rice, kept in wooden boxes with 

 different quantities of CaO. 





w.* *•/. 



1 % 



2>/a % 



5% 



after 1 month 



8 



6 



3 



3 weevils 



l'/ 2 „ 



21 



15 



10 



8 



2 months 



150 



180 



26 



18 



2'/ 2 „ 



520 



500 



230 



122 



3 



Not more to be c 





Numerous. 



4 



Changed into an u 



nrecogni- 



Swarming with weevils; 





zable filthy smelli 



ng mass; 



most of the grains hollowed 

 out; not yet stinking; 

 reaction still strongly alka- 



All the grains hollowed out 















by innumerable weevils; 









smell only slightly offen- 









sive; reaction still strongly 









alkaline. 



When we hereby consider: that unpolished rice kept 

 for 5 months in a stoppered bottle with 5 % CaO, 

 showed, after having been washed and dried, a great amount 

 of breakage and brittleness; that its physiological activity 

 was inferior to that of the rice stored in the hospital for 

 5 months; that it was very difficult to completely wash out 

 the CaO, as this is generally very difficult to moisten, and 

 that the unpolished rice got an intensely yellow tint, — a 

 discolouration which certainly again disappeared during the 

 steaming of the rice, but which still pointed to a chemical 

 change of the silver-skin — then we have convincingly brought 

 to light how useless, impracticable, and injurious is the use 

 of this "preservative". 



