APPENDIX. 257 



14. Other Nitrogen-free Substances. 



Subtract from 100 the sum of the percenters of moist lire, ;ish, theol.romm. mlTem, 

 other nitrogenous substances, pure starch, and fat. 



15. Constants of the Fat. 



On the ether extract determine melting point as directed under "XIX. Edible 

 Fats and Oils," 4 (a), page 133; index of refraction as directed under 3 (b) or 3 (c), 

 pages 132 to 133, and iodin absorption by the Hiibl process, as directed under 6, 

 page 136. 



