a suiniete in making ‘ils gas ‘on the: ee: Fhe 
For the detection of sac Aschan recommends 
some time ago). 
a gelatine: -like yellowish oeccipitite is formed with ‘sitmultando 
chilling is omitted, the sample gelatinises shortly, with sponte 
é a _ formation of the condensation-product described by Aschan some ti 
at soluble modification equally being formed in considerable amoun 
into consideration that neither from pure uae nor <= ae. 
Furthermore, isoprene ee be deed by converting it into caoutchoue, é 
which Aschan: describes in 1 detail. : 
and accidentally set it in the sunlight for a “dey ‘When ae oseerted e 1 
colour had changed to blue, and there was a precipitate of ammonium chlor ie or 
short time, the blue colour also disappeared and at the same time a hea’ 
On examination on a larger scale, the > Saturated solution i 
reddish-brown colour. In the sunlight, however ‘the colour catia 
with a simultaneous precipitation of ammonium chloride. The blue 
‘been obtained. oe 
When submitted to steam distillation, the Hea oi eve of 
4 Gfoersigt af Fi inska Vetenskaps-Soc. orn. 58. (1915) A A, No.1, P- 74. 
No. \, » P- ye = uy Journ. Americ. chem. Soe. 1 C9, eee ss 
