1042 MINNESOTA BOTANICAL STUDIES. 



Gold double salt {C&H® N0 9 • CH 3 OH- H CI) Au CJ 3 . An at- 

 tempt to make the gold double salt from the hydrochloride did 

 not prove successful. A decomposition took place on adding 

 the gold chloride, apparently caused by excess of acid. A 

 better method was found by treating the methyl hydroxide 

 ■with gold chloride which had been rendered slightly acid with 

 hydrochloric acid. A beautiful lemon yellow crystalline pow- 

 der was formed. It was filtered off, washed with hot water and 

 dried. on an unglazed porcelain plate. The substance thus 

 purified melted at 149°. It is soluble in alcohol but sparingly 

 soluble in water, ether and chloroform. It is comparatively 

 stable, remaining unchanged at 110°. A determination of 

 water of crystallization was not made. A gold determination 

 gave the following: 

 .1716 grams of the dried salt gave 0.0362. Au. 



Calculated for 



(0 32 H 4 ,)N(V CH 3 OH- H CI) Au Cl 3 Found 

 Au=21.41 21.09 . 



Veratrine ethylbromide C 32 H49 N0 9 'C 2 H r , Br. Veratrine dis- 

 solves readily in ethyl bromide, and combines slowly to form 

 the veratine bromide. It was found that heating on a water 

 bath with reflutt condenser for six hours was necessary to con- 

 vert it all into the ethyl compound. At the end of the reaction 

 the excess of ethyl bromide was evaporated off, leaving the 

 veratrine ethyliodide as a light yellow amorphous mass. By 

 treating with water and stirring for some time, the substance 

 was obtained in crystalline form. It is sparingly soluble in 

 water, but readily soluble in methyl and ethyl alcohols. It de- 

 composes readily. It shows signs of decomposition at 60°, and 

 at 100° it seems completely changed. It does not finally melt, 

 however, until a temperature of 160° is reached. The sub- 

 stance purified by boiling water was dried and analyzed. The 

 result showed that a decomposition had taken place and that a 

 tetrabromide of veratrine was formed. The ethylene odor was 

 noticed in the boiling. Analysis of the substance thus treated 

 with water gave the following numbers: 

 I .2270 grms. of dried substance gave .4591 C0 2 jind .1603 H 2 O 

 II .2228 



