Dr. A. von Planta and Mr. W. Wallace on Apiine. 221 



similar treatment. It only serves to prove more fully that apiine 

 has no connexion with the water-carbon series. 



An 'attempt was made to prove that grape-sugar was formed 

 dming the action just described, but without success, or at least 

 the indications were so imperfect that no reliance whatever could 

 be placed in them. The sulphate of copper test could not in 

 this case be employed, since apiine itself acts like grape-sugar 

 in reducing the oxide of copper to suboxide. ,, 



3. Action of boiling dilute hydrochloric acid. 



Some apiine was dissolved in warm concentrated hydrochloric 

 acid, a large quantity of water added, and the whole boiled for 

 some time. The solution was poured into cold water, and the 

 curdy precipitate which fomied collected on a filter, washed 

 tasteless and dried. The result was not much diflferent in its 

 appearance and in its I'eactions from pm'e apiine. An analysis 

 gave the following results : — 



0-2765 grm. gave 0'1265 grm. water, and 0-5988 gi-m. carbonic 

 acid. 



This gives on calculation, carbon 59-06 and hydrogen 5-08 

 per cent., which lead to the foinuula C^'^ H^^ 0'^ : — 



Found. 



24 Carbon 144 5901 59-06 



12 Hydrogen ... 12 4-91 5-08 



11 Oxygen 88 36-08 35-86 



244 100-00 100-00 



It appears then that by this operation apiine loses two 

 equivalents of water, and this substance may be represented as 



C24JJ14 013_2HO. 



Some apiine was boiled for several hours with hydrochloric 

 acid, diluted with from ten to twenty times its bidk of water. 

 By precipitation, washing and drying as before, a substance was 

 obtained resembling that prepared by dilute sulphuric acid. A 

 combustion gave the follomng results : — 



0-1975 giin. gave 0-0807 grm. water, and 0-466 gmi. carbonic 

 acid. 



This, by calculation, gives carbon 64-34 and hydrogen 4-54 

 per cent., numbers which agree tolerably well with the formula 

 for the substance obtained l)y boiling apiine wth dilute sidphu- 

 ric acid, namely, C^MIiOQS. 



Found. 



24 Carbon 144 63-71 64-35 



10 Hydrogen ... 10 4 12 4-54 



9 Oxygen _72 31-87 31 11 



226 100-00 100-00 



This substance had the general properties ascribed to that 



