opeanannore the chars, describe the 
_ homapperonyle alcohol he the action 
Te 
.em Se1 
1 
«distillation. 
a We fail to see the reason why the authors give their Beh tee the 
i piperonylic alcohol; Fittig and Remsen term it simply ‘ ‘piperony ys 
e being, in our opinion, the only correct one. . Ie 
i 3 Amongst the characteristic derivatives of tropin, : a product of the cleavage ofa 
the ketone tropinone is found. R. Robinson?) has found this product to be ea: 
tified by means of its di- PIDERQny agente aeeeoe which is formed on boi 
yellow on ane Se mite ay? means ee the di- piperonytidene com 
eer irre minute traces of tropinone may be identified. af ed 
on the fact that in a mixture of two botiles of different intends of tel 
becomes invisible, in case it is Otay ay if examined ‘under the - 
using as a + Mate an aqueous solution of | mercury potadath at eee 
percentage. In this medium, the benzoyl methyl Salicylate crystals it 
the microscopic field, whereas the other bodies stand out ieiow 
in the oil of sweet birch bark. 
In the attificial edu he found 
benzoate in addition. ee 
4) Liedig’s Annalen 159 (1871), | (38) "/Sey geeeaiegene Soc. 1 1 (1917), 762. 
Soe. 89 (1917), 820; Journ. Soc. chem. Industry 36 Ce pi and 
Americ. Journ. - hes 91 (1718), 194. Ng! 1 is ie 
