- 172 - 



This conclusion could not be confirmed by the author of 

 the present paper. 



The P 2 5 content of unhulled rice (gaba), received from 

 Soerabaja in the beginning of 1912, and which had been 

 kept in a stoppered bottle nearly 2 years, had not become 

 smaller, although during this time the rice had even got a 

 musty smell. Moreover there was no diminution in the P 2 5 

 amount in the case of samples of white and red Java 

 unpolished rice after they had been stored for a year with 

 the help of naphtaline. In unpolished Idjoean rice reaped 

 in 1913 and husked in June the same year, and which had 

 an original P 2 5 content of 0,52%, there was repeatedly 

 shown a P 2 5 amount of 0.54%, after it had been stored 

 for 5 months in the hospital, and for 6 months in the 

 laboratory, under somewhat different conditions. There was 

 thus no decrease in the P 2 5 content, but a slight increase — 

 in reality somewhat higher, because the amount of moisture 

 had somewhat increased during the storage. 



This apparently absurd augmentation was explained when 

 in the same kind of rice not less than 0,856% P 2 5 was 

 found, after a great part of the grains had been hollowed 

 out by insects. The damage done by insects which princi- 

 pally attacked the kernel with its smaller P 3 5 content, caused 

 the average P 2 5 amount of the remaining rice-grain to rise. 



Although in my opinion it is sufficiently proved by these facts 

 that there can be no question of a decrease in the P 2 5 amount 

 during storage, still more proofs were prepared for the purpose 

 of establishing beyond all question the results already obtained. 



2 nd . In Consequence of the Washing of the Rice previous 

 to Consumption, a considerable Amount of P 2 0s is lost. 



Through the washing of the unpolished rice, destined for the 

 taste-proof held in the hospital on June 25—1913, - which rice 

 was thus husked 16 days previously — the P 2 5 amount sank 

 from 0,52% to 0,27%, i.e. a decrease of almost one half. 



Two months later, the same rice was washed in the same 

 manner, in the laboratory, until, as is usual, the turbidness 



