6S EXAMINATION OF THE STROBILES OF THE HOP. 
soap ; this fluid was removed carefully for examination. The 
alcoholic solution was a pale yellow ; after twenty-four hours 
it cleared; it was separated from the precipitate solely by 
decantation, and submitted to spontaneous evaporation ; at the 
expiration of several days, there were remarked a crowd of 
small crystals which lined the sides of the capsules ; I regard- 
ed them in the first instance as crystallized sugar from the su- 
gary principle; during the evaporation gummy matter was also 
deposited upon the sides of the capsule. 
B. Examination of the matter left on the filter. 
This was allowed to remain some days upon the filter to 
facilitate the removal of the fluid part; from the gray color, 
which it presented at the time of precipitation ; it passed to a 
wine-red by exposure to the atmosphere, a coloration due 
doubtless to a principle which becomes modified by the action 
of the air, as is observed in some coloring substances; on an- 
other occasion I again observed this fact of coloration, but of 
less intensity. Once having set aside the water which had 
been boiled with the young shoot of hops, I remarked at the 
end of twelve or fifteen days, that it had acquired a beautiful 
rose color, a coloration which I attributed to the influence of 
the chloride of sodium, which is used in cooking vegetables. 
The matter which remained upon the filter, partakes in a high 
degree of the odor of the oily substance already alluded to; its 
taste is slightly sweetish ; it was treated at several repeated 
times and for several days with alcohol at 0.837; this remov- 
ed from it the sugary principle and the oily appearance ; the 
part which was not acted upon by alcohol, was without taste 
and odor; exposed for several days to contact of air, it became 
hard, and presented the consistence of corneous matter; finally, 
after prolonged contact, it became blackened and friable ; it 
resisted the action of ether, and was slightly attacked by acetic 
acid and caustic potassa ; heated in a glass tube, it gave out 
ammoniacal products. From these characteristics, I am induced 
to consider it as composed in great part of insoluble albu- 
men; I have not determined the presence of amylaceous prin- 
ciple. 
