116 REPORT OF THE CHEMIST OF THE 
This process was again repeated, the precipitate finally 
brought upon a filter, washed with absolute alcohol and ether 
and dried at 110° ©. The resulting product, which weighed 7.2 
grams, was a white amorphous powder readily soluble in water. 
Its water solution was acid to litmus and it was precipitated 
from such solution by solutions of salts of the heavy metals, by 
‘the alkali metals and the alkaline earths, also by alcohol and 
ether. 
Chemical analysis showed it to be an organic phosphorus com- 
pound coupled with calcium, magnesium and potassium. 
Of this substance, 
0.5004 gms. gave 0.0082 gms. CaO and 0.1327 gms. Mg, P, O; 
equivalent to 1.18 per ct. Ca and 5.80 per ct. Mg; 
0.512 gm. substance gave 0.0834 gm. K, Pt Cl, equivalent to 
2.60 per ct. K. 
0.2174 gm. substance gave 0.1280 gm. Mg, P, O,, équivanen to 
iGo per ‘ct.’ P. 
0.2122 gm. substance gave 0.1438 gm. CO, and 0.072 gm. H, O, 
equal to 18.52 per ct. C and 3.83 per ct. H. 
The substance carried also a small amount of nitrogen (0.37 
per ct.) ; but this was considered an impurity and, calculated as 
a proteid, would lower the carbon and hydrogen to 17.30 per ct. 
and 3.63 per ct. respectively. 
COMPOSITION OF ISOLATED PHOSPHORUS COMPOUND. 
Per ct Per ct 
BIE aha 2 ae ae ie ae ee dy ee | ie WE: pay he AR mer i 1 ake 
ite techie. cre re DOD, Geogr se «c's ae 5.80 
eerie sauce 5 allergen dae ae te A 16. BS RS ee ere. eee eee 2.60 
SIMILAR COMPOUNDS REPORTED BY OTHER WORKERS. 
Palladin,? working in Schulze’s laboratory, isolated from the 
seeds of black mustard (Sinapis nigra) a highly phosphorized 
compound in combination with calcium and magnesium. 
The seeds freed from fat were extracted with 10 per ct. sodium 
chloride solution, filtered, and the filtrate heated to about 80° C. 
A precipitate separated carrying with it all of the proteid. The 
°Beitriige zur Kenntniss plfanzlicher Niweisstoffe, Zeitschrift . Biologie, 
Jahrgang 1894, p. 199. 
