27 



dissolved about one-third. The insoluble part which continued 

 obstinately insoluble in all ordinary solvents, was dried and anal- 

 yzed. Result of analysis : 



I 0.366 Gra. gave 0.2628 Gm. H 2 O, 0.945 Gm. CO 2 



II 0.3016 Gm. gave 0.213 Gm. H 2 O, 0.7855 Gm, CO 



I 0.3566 Gm. gave I Cc. N at 21 C. and 717 Mm. 

 II 0.3006 Gm. gave I Cc. N at 22 C. and 719.5 Mm. 



I II Mean 



C 70.96 7I-03 2 70.996 



H 8.03 7.899 7.965 



N 0.24 0.25 0.245 



Ash 1.200 



The ether solution was darker and more truly red than any 

 of the other solutions ; on allowing the ether to evaporate spon- 

 taneously and allowing the residue to stand for a few hours, a 

 portion became insoluble in all ordinary solvents. This was 

 exhausted with ether, dried and analyzed with the following 

 results : 



I 0.3104 Gm. gave 0.2387 Gm. H 2 O, 0.7983 Gm. CO 8 



II 0.2394 Gm. gave 0.19 Gm. H 2 O, 0.622 Gm. COjj 



I 0.415 Gm. gave 3.2 Cc. N at 21 and 720 Mm. 

 I II Mean 



C 71.012 70.897 70-954 



H 8.596 8.877 8.736 



N 0.850 



Ash 0.210 



The ether extract from above was allowed to evaporate 

 spontaneously as before but remained soluble in ether and alcohol 

 even after standing several days and after repeated solution and 

 evaporation. On heating the residue at 100 for a short time it 

 became insoluble and behaved in all respects like the preceding. 

 Analysis gave these results: 



I 0.329 Gm. gave 0.2501 Gm. H 2 O, 0.8874 Gm. CO 2 

 II o 3374 Gm. gave 0.2588 Gm. H 8 O, 0.9121 Gm. CO 2 



I 0.3946 Gm. gave 3.4 Cc. N at 22 C. and 720 Mm. 

 I II Mean 



C 73-554 73-721 73. 6 37 



H 8.503 8.579 8.541 



N 1x940 0.940 



Ash o.i 60 



H. Yoshida oxidized the alcoholic extract (Urushic acid) 

 with chromic acid mixture, and obtained a brownish powder 

 which he washed with alcohol, dried and analyzed. 



