ANIMAL PRODI < TION. 489 



of dried molasses scum Bhowed the presence of LO per cent water, LI. 30 per cenl 

 chi tin, 31.63 per cent protein, 27.50 per cent fat, L4.00 per cenl carbohydrates, and 

 5.58 per cent ash. The fal was similar in some of its properties to butter fat. 



Analyses are reported of cane juice before and after freezing, and the question of 

 injurious effects of frosl on cane is considered. A- regards the effecl of temperature 



upon the polarizati f cane juice, the results obtained indicate " first, that a falling 



off in the polarization of raw sugars between ports in tropical and temperate latitudes 

 may be due to differences in the temperature "i" polarization as well as to deteriora- 

 tion, and, second, that tables for correcting polarizations to a standard temperature, 

 based upon variations in the rotation of sucrose alone, are of no value in the polar- 

 ization of raw-cane products. These observations hold, however, only for Hingle 

 polarization, for if the sugars are double polarized, as b) the Clerget method, the 

 levulose error is entirely obviated." 



In connection with the physiological experiments on maturing cane, data are 

 reported regarding the juice of stubble canes. Other work of the year is also referred 

 to briefly. 



Report upon the properties and utilization of rice oil. ( '. A. Bhowne, Jr. 

 i La. Pkinler,$4 I 1905), No. ?£, pp. 352,353). Since rice bran and polish are frequetly 

 undesirable as feeding stuffs, ow ing to the development of acid from the oil present, 

 methods of improving the feeding qualities of the rice by-products were studied. 



It was found thai heating the bran to 200° F. or over destroyed the ferment 

 which decomposes the rice fat. 1 [owever, as the rice feed possesses laxative proper- 

 ties, it seemed desirable to remove the oil, and tests showed that this could be satis- 

 factorily accomplished with the aid of a solvent. The oil obtained differs decidedly 

 in character and properties from that of other cereals. It is semisolid at winter 

 temperature, begins to melt at about 75° l\. and becomes perfectly transparent at 

 117° F. At ordinary summer temperature the oil separates into solid and Liquid 

 portion-. 



A -ample of rice oil extracted with ether from old bran had the following con- 

 stants: Specific gravity 0.8907, melting point 24°, acid number 166.2, saponification 

 number L93.5, ether number 27.3, iodin number 91.65, Reichert-Meissl number 

 (volatile acids) 1.1. mean molecular weight of insoluble fatty acids 289.3, melting 

 point of insoluble fatty acids :!t>°. Some determinations made with a sample of rice 

 oil representing a large extraction gave about the same values. The oil contained 

 about 1 per cent of matter which did not saponify'and which in microscopical appear- 

 ance and physical properties resembled phytosterol. A small amount of phosphoric 

 acid was also present equivalent to <>.•", per cent lecithin. 



"The fact that rice oil contains fats of hiu r h melting point and fatty acids of high 

 mean molecular weight would indicate the probable presence of such higher fatty 

 homologues a- arachidic, behenic, or Lignoceric acids. < rlycerids of the volatile fatty 

 acids are present only in traces. - ' Since rice oil becomes rancid so readily, the author 

 does not consider thai it would prove a satisfactory culinary fat. llr-n^i-i- that 



the solid portion which separates at ordinary temperature and i stitutes 20 to 50 per 



cent of the total, would prove useful for candle making and the Liquid portion for 

 soap making. 



According to his estimates, the presenl rice crop of Louisiana would yield about 

 500,000 gal. of ii,e oil annually. It is pointed out that the utilization of this by- 

 product would pn.ve important, especially when it is remembered that removing 

 the oil improves the feeding qualities of the rice by-products. 



The composition of some of the concentrated feeding- stuffs on sale in 

 Florida, A. \V. Blair | FlorvddSta. Bul.80,pp. 19 . A number of concentrated feeds 

 mi sale in Florida were analyzed to determine whether or not the existing conditions 

 of affairs warranted a State feeding-stuff law. 



14462— No. 5 -06 



