120 LABIATE. 



in water and in solution of potassium hydrate, very sparingly 

 soluble in boiling water and in cold alcohol. Soluble in hot 

 95 per cent, alcohol^ also in ether and chloroform. They melted 

 at ]52° to 153° 0. They were at first tasteless, but developed, 

 when held on the tongue^ a decided bitterness. The alcohohc 

 solution was very bitter. 



Sulphuric or nitric acid gave a dark -brown colour, hydrochloric 

 acid produced no change and ferric chloride produced no change. 



This principle reduced Fehling's solution slightly by boiling, 

 without first being treated with an acid. On boiling it first 

 with acidulated water a peculiar aromatic odour was developed, 

 then on heating with Fehling's solution an abundant precipitate 

 of cuprous oxide was produced, thus showing it to be an easily 

 decomposable glucoside. 



A small quantity of a bitter principle was extracted from the 

 drug by absolute alcohol, along with the resin. This appeared 

 to be different from the previous one extracted by ether, and 

 for the purpo:se of further investigation, a larger quantity of 

 the drug was exhausted with ether, the solvent recovered and 

 the residue treated with petroleum ether to remove fat and wax.. 

 The remaining portion was dissolved in hot alcohol, treated 

 with animal charcoal and crystallized. The crystals were puri- 

 fied by repeated crystallization and treatment with animal 

 charcoal. Melting point, 152° to 153^ C. 



The average of two combustions was : 



\ 



c 



H 



Found. Calculated for 



(C*oH»sO") 



70-25 70-38 



8-42 850 



^ 21-33 



21-12 



100-00 ] 00-00 



Three samples of crystals, presented with a thesis of last year 



^Ln T" • H^^t^l. Pi^-G. ( American Journal of Pharmac!/, 

 1»90, p. 273), and obtained by him from the fluid extract, wer« 



i 



