403 
THE PRINCIPLES OF BOTANY. 
stained of a dark colour, but did not seem to be the result of 
inflammation. The carcase seemed to be passing rapidly to 
decomposition, as it was distended with gas, and emitted a 
strong smell. The blood, which had been extracted about 
an hour or so before death, was allowed to stand in the bucket 
for a day or two. It had not separated at all,but was amass 
of dark-coloured clot, firm enough to retain the shape of the 
bucket when turned out, and was free from smell. 
THE PRINCIPLES OE BOTANY. 
By Professor James Buckman, E.G.S., E.L.S., &c. &c. 
{Continuedfromp. 318.) 
The Cannabinacce , or Hemp worts, includes two genera, 
one of which, the Humulus Lupulus , or Hop, is a doubtful 
native, and the other Cannabis sativa , or Hemp, is certainly 
not so; yet, at the same time, they are both so well known 
from cultivation and uses, and their spread over our country 
has become so general, that at least they may be described as 
“ naturalised” among us. Not only are the genera in this 
natural order so limited, but the number of species is equally 
so; and yet it would be difficult to point to a plant which 
possess greater interest, whether considered structurally, 
economically, or medicinally. 
The Hop is well known as a common liedge-climber—- 
indeed so common that Sir W, Hooker quotes Dr. Bromfield’s 
opinion, who, he says, “ thinks this indisputably indigenous 
in the south of England.” But if this be so, the old adage 
which says that— 
“ Hops, Carp, Piekernal, and Bere, 
Came into England all in one year, 55 
must apply to the introduction not of the plant, but prob a 
ably of its use in brewing. 
In as far as our observations in the field would lead us to 
decide this question, we are inclined to think that it has been 
introduced to our local flora, perhaps, first as an interesting 
and graceful garden plant, and then as an economic 
one. 
Its constancy in hedge-rows near dwellings in districts 
