— 170 — 



of "camphenanic acid" for this body. As a result of these communications 

 Henderson and Miss Sutherland announce that they will in future call | 

 their camphylic acid "camphenanic acid". 



Bornylene. As stated on p. 171, the conversion of bornylene into cam- 

 phenilanaldehyde points to the close relationship of the camphene and 

 bornylene nuclei. According to G. G. Henderson and I. M. Heilbron 1 ) the 

 conversion may be represented by the formulas given below, it being 

 assumed that an oxide-like body is formed as an intermediary product. 

 On the basis of this conversion, as well of theoretical considerations 

 which we have not space to repeat here, the authors regard Semmler's 

 old camphene-formula as the most likely to be correct. 





CCH 3 



H 2 C 



/ 1 \ 





C-(CH3>2 



H 2 C 



\ 





CH 



JCH 



CH 



Bornylene. 



C-CH 3 



C(CH ? )2 /CH-CHO 



CH 



Camphenilanic aldehyde. 



CCH 3 



Oxide-like intermediary product. 



C-CH 3 



C(CH 3 ), >C:CH 2 



Semmler's old camphene formula. 



G. G. Henderson 2 ), who, with various collaborators, had previously 

 investigated the action of chromyl chloride upon limonene, pinene, and 

 terpinene, has recently, together with I. M. Heilbron 3 ), oxidised bornylene 

 with chromyl chloride and has also studied the behaviour of the hydro- 

 carbon when attacked by nitric and nitrous acids. Reaction of chromyl 

 chloride with bornylene which had been dissolved in carbon disulphid^, 

 gave rise in the first place to an additive product Ci Hi 6 , 2Cr 2 2 Cl 2 , which 

 upon the addition of ice was converted into a chloroketone Ci Hi 5 OCl 



!) Journ. chem. Soc. 99 (1911), 1901. 



2 ) Comp. Report April- 1908, 180; November 1908, 171; October 1909, 176. 



3 ) Journ. chem. Soc. 99 (1911), 1887. 





