302 



DR T. H. ROWNEY ON THE 



The following are the numbers obtained : — 



j ( "2550 grammes of substance gave 

 ' \ '0865 ... of sulphate of baryta. 



jj f -2227 grammes of substance gave 

 ' \ '0765 ... of sulphate of baryta. 



{•2472 grammes of substance gave 

 •5485 ... of carbonic acid, and 

 •2113 ... of water. 



Carbon, 

 Hydrogen, 

 BaO 

 Oxygen, 



22-28 



II. 



22-56 



III. 



Mean. 









60-51 



60-51 



^36 



216 



61-78 



9-49 



9-49 



-^33 



33 



9-44 





22-42 



BaO 



76-6 



21-91 





7-58 



°a 



24 



6-87 



100-00 



349-6 



100-00 



Elaidine. 



The solid fat or elaidine, obtained by passing nitrous acid into almond oil, is 

 readily acted upon by ammonia, and yields a large quantity of a crystalline amide. 

 Upon the addition of this reagent a deep red colour is produced ; and when the 

 action is completed, the whole is transformed into a pasty mass, which is collected 

 on a filter, washed with water, and expressed, by which means most of the 

 colouring matter is removed, the mass is purified by several crystallizations 

 from alcohol ; and the amide is then obtained in brilliant groups of perfectly 

 colourless crystals, which are very soluble in alcohol but insoluble in water. 

 Elaidamide is decomposed by fusion with potassa, ammonia being evolved, but a 

 solution of potassa is entirely without action upon it. In this property it resem- 

 bles oleamide ; indeed, all the fatty amides which I have examined agree in this 

 respect. 



It begins to fuse at 92° C, and is completely fluid at 94° C. ; upon cooling it 

 solidifies at 91° C. and becomes opaque. 



The analysis gave the following results : — 



C -2035 grammes of substance gave 

 I. < *5725 ... of carbonic acid, and 



II. 



Ill 



Carbon, 



Hydrogen, 



Nitrogen, 



•{•: 



•2323 



•2100 

 •5865 

 •2405 



4790 

 0234 



of water. 



of substance gave 

 of carbonic acid, and 

 of water. 



of substance gave 



of nitrogen. 



I. 



76-72 

 12-68 



II. 

 76.16 

 12.72 



III. 



488 



