SOME VEGETABLE PROTEIDS. 



141 



finally effected, but the result was so poor that no attempt 

 was made to determine the small correction for the ash 

 present. 



The results of drying the solutions down at 110 C. and 

 of the polarimeter observations are shown in the following 

 table: 



The values found for (a) D are not very concordant or accu- 

 rate, but are the best that the writer could obtain with such 

 opaque solutions. Omitting the value 33.5, which was 

 somewhat doubtful, and the value 37.1, which was not cor- 

 rected for ash, the weighted mean of these is 



(a) D = _40.3. 



Sodium-chloride-potassium-hydroxide Solution. When po- 

 tassium hydroxide was added to a sodium-chloride solution of 

 Brazil-nut globulin the resulting solution had to be made much 

 more strongly alkaline to prevent precipitation than with 

 solutions of either flax-seed or hemp-seed globulin. 



Sixty-nine cubic centimeters of Solution 17, diluted, were 

 made up with an 8.2 per cent potassium-hydroxide solution to 

 100 cubic centimeters. The resulting solution contained, in 

 100 cubic centimeters, 0.633 gram of ash-free globulin, 6.90 

 grams of sodium chloride, and 2.55 grams of potassium 

 hydroxide. 



