722 
THE PRINCIPLES OF BOTANY. 
ised by more or less depression. In some cases, rarely, how¬ 
ever, the nasal discharge and the tumefaction of the sub¬ 
maxillary glands have a tendency to persist, and it was from 
a case of this kind that the man was inoculated. 
It appears to me that the distemper of the United States, 
which, I think, might not inappropriately be termed epizootic 
laryngo-bronchitis, is very closely related to the influenza and 
strangles of Britain, and it has occurred to me that cases of 
inoculation such as I have described may have come under 
the notice of British practitioners. I am aware that many 
veterinary surgeons believe that influenza is not contagious. 
I think, however, that a closer examination of the subject 
will lead to the discarding of this opinion. Maladies such as 
the influenza and strangles of Britain, and the so-called 
distemper of this country, vary so much in their manifesta¬ 
tions and intensity that what may be predicated of some cases 
cannot be predicated of all; and I am inclined to think that a 
closer examination into the characteristics of these maladies 
may show that they are more readily transmitted than has 
hitherto been thought. 
THE PRINCIPLES OF BOTANY. 
By Professor James Buckman, F.G.S., F.L.S., &c. &c. 
(Continued from p. 616.) 
The Corylace^:. —Mastworts, though a small natural 
order, is yet one of the most important and interesting in 
the whole range of the vegetable kingdom, for though it has 
but about a dozen genera, yet some of these are rich in species, 
and we have only to mention the three following to at once 
bespeak attention and excite the utmost interest for our 
subject. They are:— 
1. Fagus. —Beech. 
2. Castanea. —Chestnut. 
3. Quercus. —Oak. 
1. The Beech is one of our native forest trees, and 
from its attaining to a large size on comparatively thin and 
poor soil, it is much used in planting. On the great Oolite 
in Oakley Park, Cirencester, miles of planted beech occur, 
and as when planted thickly they tower up to a great height 
without bifurcation, these beechen groves afford a solemn 
shade, which are no less grateful to the man of thought than 
