produced by the Destructive Distillation of Peat. 117 



the bibromide of ethylene upon picoline, we have obtained salts 

 of an ammonium which is remarkable for the beauty of many of 

 its compounds. The reaction, which takes place readily when 

 the materials enclosed in a sealed tube are heated to the boiling- 

 point of picoline, proceeds thus : — 



2[(C 12 H 7 )"'N] + (C 4 H 4 )" Cl 2 = (C 12 IF)'" 2 (C 4 H 4 )" N 2 CI 2 . 



Two equivalents of picoline have thus been united into one 

 molecule by means of the diatomic group ethylene : at the 

 same time hydrochlorate of picoline and other compounds appear 

 to be formed, but only in small quantity. The details con- 

 cerning several new derivatives of the pyridine bases are reserved 

 for another communication. 



Lutidine. 



The fraction 150° to 155° was not examined. The fraction 

 155° to 160° amounted to 60 grammes, and consisted of pure 

 lutidine, the boiling-point of which is 154°. The following deter- 

 minations of metal in the platinuui salt agree well with the 

 theory : — 



I. 0-0728 grm. gave 0-0228 grm. platinum = 31-33 p. c. 



II. 0*605 grm. gave 0*19 grm. platinum = 31 -40 p. c. 



A portion of the base which distilled over in the 8th rectifica- 

 tion between 160° and 165°, gave a platinum salt which on 

 ignition furnished the following numbers : it had been recrystal- 

 lized from alcohol, and was a very beautiful salt : — 



III. -5062 grm. gave 0-1585 grm. platinum = 31 -31 p. c. 



IV. *506 grm. gave 0-1585 grm. platinum =31*32 p. c. 

 These platinum salts, which were of a deep orange colour and 



highly crystalline, occurring in very regularly flattened square 

 tables, corresponded almost exactly with the lutidine platinum 

 salt as described by Anderson, but seemed to be rather less solu- 

 ble in cold water. 



Translated into per-centages, the four preceding analyses give 

 the following results : — 



Platinum 



The fraction 165° — 170° gave indication of the presence of the 

 next higher homologue of lutidine when the platinum salts frac- 

 tionally precipitated were ignited. 



V. 0334 grm. gave 0*1052 grm. platinum = 31 -52 p. c. 

 VI. 0-4345 grm. gave 0*1346 grm. platinum = 30*97 p. c. 

 VII. 0-291 grm. gave 0*0884 grm. platinum = 30-37 p. c. 

 The per-centage of platinum in the last of these salts is almost 



