



338 Report of the Department of Chemistry of the 



were made to crystallize in the same manner. They were then 

 extracted several times with small quantities of alcohol. The residues 

 were then dissolved in hot water and crystallized by the addition of 

 alcohol. After recrystallizing three times it was obtained in small 

 colorless needles. It weighed 0.25 grams. It melted at 222 

 (uncorrected) and gave the Scherer reaction and was therefore 

 undoubtedly inosite. After recrystallizing it again melted at 222°. 

 The crystals did not contain water of crystallization as there was 

 no loss in weight on drying at 105° in vacuum for one hour. The 

 substance was further identified as inosite by the analysis. 



0.1019 gram subst. gave 0.0629 gram H 2 and 0.1492 gram C0 2 . 



Found: C = 39.93; H = 6.90 per ct. 



For CeHtfOe, calculated: C = 40.00; H = 6.66 per ct. 



The alcoholic washings from above and the mother-liquor on evap- 

 oration left a dark colored, non-crystallizable syrup. This syrup 

 strongly reduced Fehling's solution on boiling. 



It is noteworthy that the amount of inosite obtained by cleavage 

 with water is much less than when dilute sulphuric acid is used. 

 The amount of inosite isolated above represents only about one- 

 half the quantity obtained when the hydrolysis is effected in the 

 presence of acid. It is possible, however, that in this case the inosite 

 had been less completely isolated since the adhering syrupy sub- 

 stance rendered crystallization more difficult. 



examination of the water-soluble portion of the amorphous 



barium salt. 



As has been already mentioned on page 17 the nitrates contain- 

 ing the water-soluble portion of the amorphous barium salt were 

 precipitated with alcohol. After filtering and washing, the precipi- 

 tate was dried in vacuum over sulphuric acid. It was again digested 

 in water three times and filtered from small insoluble matter and 

 the nitrates precipitated with alcohol and dried. It was finally 

 obtained as a snow-white amorphous powder. As it was impossible 

 to obtain any crystalline substance from it, it was analyzed after 

 drying at 105° in vacuum over phosphorus pentoxide. 



0.3504 gram subst. lost 0.0294 gram H 2 on drying. 

 0.3210 gram subst. gave 0.0616 gram H 2 and 0.1342 gram C0 2 . 

 0.2415 gram subst. gave 0.1465 gram BaS0 4 and 0.1236 gram 

 Mg 2 P 2 7 . 



Found: C = 11.40; H = 2.14; P = 14.26; Ba = 35.69; H 2 = 

 8.39 per ct. 



The substance was free from inorganic phosphate and chlorides, 

 and bases other than barium could not be detected. We hope to 

 investigate this substance further. 



