90 



AIJON. 



observation that man}' beriberi patients suffer from extreme consti- 

 pation. 



I have made comparative analyses showing the amount of "soluble" 

 phosphorus in polished and unpolished rice and also in rice husk (darac) 

 which is left as a result of the polishing process. 



THE SOLUBILITY OF P„O s CONTAINED IN WHITE AND RED RICE. 



One hundred grams rice were extracted for five hours with 1,000 cubic 

 centimeters 0.5 per cent hydrochloric acid. White rice gave 0.133 gram soluble 

 PA or 42.03 per cent of the total PA- Red rice gave 0.330 gram soluble 

 P 2 s or 59.3 per cent of the total PA- 



One hundred grams rice were extracted for two hours with 1,000 cubic 

 centimeters 0.3 per cent hydrohlorie acid. White rice gave 0.079 gram soluble 

 PA or 25.2 per cent of the total P.0 3 . Red rice gave 0.221 gram soluble 

 PA or 39.7 per cent of the total PA- 



The following is a graphic representation of these results and shows them 

 very plainly. 



liibli m 0.37. HCl 



The solubility of the PA ™ " ce husk obtained by polishing (darac). 



Fifty grams husk, containing 8.27 per cent water, were treated for five 

 hours with 300 cubic centimeters of the solvents given below: 



Per cent dissolved by- 



P 2 5 . 



Nitrogen. 





0.34 

 1.70 

 1.66 

 2.04 

 2.25 



4.28 



0.269 

 0.314 

 0.326 

 0.407 

 (0.312)? 



2.00 











Total 



