CUMMON CRANESBILL, ° 87 
ticles of its class which are consumed among us. 
The experiments, which I have made upon this 
root, have been principally directed to the exami- 
nation of its astringent qualities. 
A drachm of the powdered root was steeped in 
two ounces of cold water and the infusion filtrat- 
ed. Successive portions of water were add- 
ed until the liquid came off colourless and _taste- 
less. The collected infusion had a pale greenish 
colour, and a styptic, austere taste. It did not 
redden vegetable blues. : 
To half this infusion was added a drachm of 
gelatin in solution, The liquor instantly became 
of a milky whiteness, and a copious white precipi- 
tate was thrown down. ‘This precipitate was dri- 
ed and assumed a semi-transparent, horny ap- 
pearance. Its weight was eleven grains. 
A drachm of kino treated in the same man- 
ner was rendered turbid, but gave a very scanty 
precipitate with the gelatin. 
To portions of the same infusions was added a 
solution of the muriate of tin. In both of them a_ 
greenish precipitate was formed, but that of the 
Geranium was much the most immediate and 
abundant. 
The sulphate of iron struck a dark purple col- 
our with the infusion of Geranium. ‘The com- 
