io6 Organic Phosphorus Compounds of Wheat-Bran [Mardi, 



of microscopic globules, similar to those described by Anderson 

 from cotton-seed meal, oats and corn. After filtration, second, 

 third and fourth crops of these crystals, as we shall call them, were 

 obtained by adding more alcohol and allowing to stand. These 

 were united, and recrystallized by the same procedure. About 2 

 gm. of pure white substance were thus obtained. The crystals 

 were dried for analysis at 105° C, in vacuum over phosphorus 

 pentoxid. Analytic data: 



0.2124 gm- gave 0.1274 gm. MgoPjOr. 

 0.2053 gm. gave 0.1347 gm. BaSO*. 

 0.3099 gm. gave 0.0708 gm. CO, and 0.0392 gm. HoO. 

 Found: F, 16.72%; Ba, 38.61%; C, 6.23% ; H, 1.42%. 



Calculated: for tri-barium inosite-hexaphosphate, CeHijOjiPsBaj — 



P, 17.44%; Ba, 38.65%; C, 6.75%; H, 1.12%. 



Calculated; for CeHisO.iPgBas — 



P, 17.35%; Ba, 38.43%; C, 6.72%; H, 1.69%. 



There is little choice between these two calculated formulas. 

 While the results for this material correspond to those for a tri- 

 barium salt, the crystalline substance obtained by Anderson (by 

 the same method) gave analytic data corresponding to the hepta- 

 barium salt, (RgBay). It is possible that our Solution contained 

 more free acid than his. When portions of this salt that had been 

 dried in vacuum over sulfuric acid at room temperature, or in a 

 water oven at 100° C, were further dried at 105° C, in vacuum 

 over phosphorus pentoxid, a slight loss in weight resulted. This 

 was, however, variable; the crystal form of the salt was not in- 

 jured by it. It hardly seems probable, therefore, that water of 

 crystallization was present, hence the percentages of moisture lost 

 by this drying are not quoted. 



Crystallisation of the barium sali from dilute acid Solution. All 

 of the remaining impure barium salt was extracted with water as 

 described above, and the insoluble portion, weighing about 20 gm., 

 purified as follows. It was dissolved in 0.2 percent hydrochloric 

 acid sol. and, after filtering from a slight insoluble residue, alcohol 

 was added until a fairly heavy precipitate resulted. This required 

 considerably less than i vol. of alcohol. The precipitate was 

 amorphous but, after standing over night, it became crystalline, 

 similar in appearance to that already described. It was filtered 



