[ *75 ] 
tindture communicated both to water and redtifyed 
fpirit by the Vienna extradt, that the Hemlock had 
been gathered too foon, and before the plant was in 
vigour. 
E X P. III. 
The fpirituous tindture of the Lifbon extradt was 
not fo green, nor was the green fo durable, as that of 
the Vienna extradt: the phenomena, in confequence 
of the other experiments, did not differ materially 
from thofe of the Vienna extradt. 
EXP. IV, 
The fpirituous tindture of the extradt of Hemlock 
prepared at the Apothecary’s-Hall, was like in co- 
lour to that of Coimbra, but the refiduum did not 
differ confiderably from that of Vienna and Lifbon. 
This extradt has been ufed with fome fuccefs at the 
Weftminfter-Hofpital. 
EXP. V, 
The fpirituous tindture of the powdered leaves of 
Hemlock was like in colour to the laft ; the refidu- 
um differed materially from that of the former ex- 
tradts only in its rezin’s being confiderably more 
fluid. 
Thefeexperimentsfhew that the extradt of Hemlock 
prepared at Coimbra contains a far greater quan- 
tity of an effential oily fait and rezin, than the other 
extradts. As the oils, faltsand rezinsare the moft adl- 
c ive 
