92 HOW CROPS GROW. 
CENTESIMAL COMPOSITION OF THE ELEMENTARY FATS, 
Stearin.  Paimitin. Olein. 
Carbon, 76.6 75.9 TVA 
Hydrogen, 12.4 12.2 11.8 
Oxygen, 10.0 11.9 10.8 
100.0 100.0 100.0 
Phosphorized Fats.—The animal brain and spinal cord, 
and the yolk of the egg, contain a considerable amount of 
fat which has long been characterized by a small con- 
tent of phosphorus. Von Bibra found the quantity.of 
phosphorus in this (impure) fat to range from 1.21 to 2.53 
per cent. Knop (Vs. S¢. 1, p. 26) was the first to show that 
analogous phosphorized fats exist in plants. From the 
sugar pea he extracted 2.5 per cent of a thick brown oil, 
which was free from sulphur and nitrogen, but contained 
1.25 per cent of phosphorus. 
The composition of this oil was as follows: 
CAT DONG... sieiceiaaiae odes d acisinis/an.sraiele stenie emia 66.85 
Ey (ROR EN! icin siefele ois siaicis's\e|-'als'siais/<ins cieteteiete 9.52 
COG E BMle yer s arate arse oe laiereiejelatsicia) einie’a)o\cieraiciete aad 22.38 
Lass vont yeanioong coodosdnocanoononcccs 1.25 
100.00 
Tépler (Henneberg’s Jahresbericht 1859—1860, p. 164) 
subsequently examined the oils of a large number of seeds 
for phosphorus with the subjoined results: 
Source of Per cent of Source of Fer cent. ¢ 
Sat. phosphorus, fat. phosphorus 
Lupine.........+...6. 0.29 Walnut....-seeceeees trace 
PAW sin. -aisinec'cc wen vee abr g Olive... ..scessieeiiets none 
Horse bean........... 0.72 Wheat. .sicesitseremamim 0.25 
WIGHCHS ste cide ase0 ne cccee 0.50 Bar leyissoe son esteem 0.28 
Winter lentil......... 0.39 RY @). 0s aes sins eee 0.31 
Horse-chestnut....... 0.30 OAL... sicces ostream” 0.44 
Chocolate bean...... none PaX....0cr000 0 saslenmen none 
MST Otc oa tania’ s'o's 910 rk Colzals sic asiemalere Be 
