1920 
188 Philippine Journal of Science 
Table 4. — Distribution of proteins soluble in different solvents — Continued. 
TRIAL 3. 100-MESH SAMPLE, MODIFIED METHOD. 
The separation and purification of the alkali-soluble protein will 
be undertaken soon and a study made of its amino-acid content. 
SUMMARY 
1. The nitrogen partition in that portion of copra meal insol- 
uble in hot water has been studied; it has been found that 
copra meal is rich in the amino-acids necessary for maintenance 
and growth, 
2. It has been found that the alkali-soluble protein is the most 
abundant in copra meal. 
3. The maximum amount of total protein nitrogen dissolved 
is only 47.55 per cent of the actual amount present in copra 
meal. This result seems to be rather low when compared with 
that obtained by Osborne and Campbell. (15) They were able 
to dissolve a total of 96.6 per cent of the protein nitrogen found 
in lupine seeds. 
ACKNOWLEDGMENTS 
I wish to thank my major professor, Dr. Manuel L. Roxas, for 
giving me the subject and for valuable criticisms throughout 
the progress of the work, and Dr. Augustus P. West for sug- 
gestions and for loaning me some of the apparatus and chemicals 
used. 
