1919.] The Sixth Indian Seience Congress. CXXXiil 
ya 
rok C=CHR 
N Laie by CH; 
These substances contain ~ any -CO.C=C and are ay tad col- 
oured. The present paper describes how aldehydes may be m 
with pyrazolone, without she. vclirhins ation o are rm the ane 
diate additive hydroxy pamgpey which bear the same relation to the 
compounds of the first type aldol does to crotonaldehyde. These 
compounds have the general Preston 
Poni 
C3H;N CH.CH (OH).R 
N C.CH3 
The chromophoric group ave C=C is absent in them and _ necessarily 
they are either colourless or at any rate — on regan than the cor- 
responding unsaturated uate nds, An a@ to synthesise iso 
denivedives from the pyrazolone and vianiiraiesen is also des- 
eribed 
ie condensation products with lpg eer and ketones have 
Som 
been prepa: and in this connection it een pointed out that the 
: aliphatic | poripode are much less reactive than ae of the aromatic series 
Note on an alkaloid in Argemone mexicana.—By D. N. 
CHATTERJI. 
Argem exicana or prickly poppy, which belongs to the pager 
order farrier is widely distributed in India. It is known in 
U.P. and the Punjab by the vernacular name Satyanash 
ra 
ls 
bs 
A ag 
2 © 
P 
perties of the seeds, great diversity of opinion exists. While ‘ 
sidered them to be inert, many regarded them to have toxic properties 
in th s similar to what exists in opium, and ably morphia 
Whil 1 have regarded the seeds to narcotic, no 8 
opinion is on record with regard to the juice of the pl 
obtained an alkaloid which he found to agree in 
reactions with morphia. My own experiments show that the seeds 
contain only a trace of an alkaloidal substance, a very small quantity of 
ich ¢ ined from the other parts of the plant. It thus fol- 
lows that i ve any. narcotic properties, it is improbable 
oe they are due to the alkaloidal substance pr nt, t hi 
a bstance, whic btained on extracting the 
whole plant in yell -white crystals, had a bitter taste, 
a in its eek n. Though behaving in some respects like morphine, 
it was fo iffer from the latter in many of its reactions. It d 
solved in cold or hot strong sulphuric acid with the almost immediate 
formation of iolet colour, whi to re after a time. 
eating the violet soo to blackis co of 
nitric acid to the sulphuric acid solution, the violet increased an n 
‘ey with simultaneo formation of a - 
On was © green 0 
the bluish green tinge with the subsequent production of — iyo found 
to be very characteristic of the substance under ex com- 
bined sulphuric and nitric acid tests may be employed ‘tor the detection 
