38 GIBUS AND AGCAOILI. 



Table ITa. — Constants of lards from copra-fed hogs. 



Intestinal fat: 

 Hog No. 1 

 Hog No. 2 

 Hog No. 3 



Kidney fat: 

 Hog No. 1 

 Hog No. 2 

 Hog No. 3 



Leaf lard: 

 Hog No. 1 

 Hog No. 2 

 Hog No 3 



41.1 

 41.0 

 42.3 



39.1 

 39.7 

 41.0 



39.4 

 39.5 

 40.7 



45. 5 

 45.0 

 46.0 



44.5 

 47.0 

 45.0 



44.5 

 45.0 

 45.0 



207.4 



37.4 



204.8 



42.0 



210.6 



39.2 



213. 7 



37.3 



210.4 



37.2 



210.0 



35.7 



208.8 



35. 3 



204. 6 



42.5 



210.1 



32.5 



40.2 

 42.9 

 40.3 



41.4 

 42.0 

 40.3 



42. 2 

 46.2 

 36.2 



0.006 

 0.020 

 0.019 



0. 02S 

 0.032 

 0.028 



0.017 

 0.020 

 0.011 



Since the Keichert-Meissel number and the ester equivalent 13 are in 

 a measure characteristic of coconut oil, or at least very different from 

 the corresponding lard numbers, these figures were obtained in order to 

 determine whether the coconut oil had exerted any influence which could 

 be detected in this way. 



The Keichert-Meissel numbers varied from 2.3 to 0.7 and showed no 

 regularity of any interest. The ester numbers varied from 1.0 to 0.4. 

 A determination of this factor for a sample of coconut oil gave : alcohol 

 solution, 6.7; water solution, 27.5; sum, 34.2. While the free acids, 

 as shown in Table II, are high, it is evident that the differences between 

 the constants of these lards and normal lards are not due to this cause. 

 Moreover it is to be noted that the determination of the free acids was 

 made some time after all of the other analytical determinations had 

 been completed. We attribute the high acidity in a measure to the fact 

 that these samples were, in the begimiing, not kept on ice. All other 

 samples were constantly on ice except when being sampled for analysis. 



Since the constants of the lards from the corn-fed hogs, especially the 

 titre, refractive index, and iodine numbers, showed a remarkable variation 

 from the usual lard constants, another series of feeding experiments was 

 inaugurated. The data concerning the feeding axe so meager and un- 

 satisfactory that little or no light is thrown upon the questions under 

 consideration. 14 





13 J. Hanus: Ztschr. f. Untersuoh. d. Nahrungs-u. Genussmittel (1907), 13, 18. 



11 Five lots, consisting of four hogs each, were fed on rations composed of 

 varying proportions of copra cake, corn, and tiquitiqui (a powder produced in the 

 cleaning of rice. It consists of small particles of the grain and a small percentage 

 of broken hulls.) The available feeding data furnished to us are tabulated as 

 follows : 



