CG8 BOTANY AS APILIED TO VETEllINAllY SCIENCE. 
law as an unsoiindncss; and it might afford a purchaser 
(sorry for his bargain) a loophole out of which he can crccp^ 
should he desire it. At the same time it will, as far as my 
experience has gone, not in any way impair vision. 
In these latter cases are frequently found a considerable 
quantity of mucus upon the loA^er lid, showing that the 
conjunctiva is not in health; and we often find also the eyes 
watery in horses Avhich have recently been taken into the 
stable and fed upon dry food. A question is always put as 
to the probability of such eyes remaining sound : if the 
derangement is merely functional—produced by a too sud¬ 
den change of dietary and stable management; by a little 
care and attention a healthy state of the eyes will soon be 
established. 
[To he continued?^ 
BOTANY AS APPLIED TO VETERINARY SCIENCE. 
By W. Watson, M.R.C.V.S., Rugby. 
[Continuedfrom 534.) 
The only remaining plants possessing characters which 
may come under the notice of the veterinary surgeon be¬ 
longing to the natural order Solanacea are the Nicotiana 
tahacum [Tirginian tobacco), and the Datura stramonium [thorn 
apple). The Atropa mandragora [mandrake) belongs to this 
order of plants; but as it is rare!}" to be met with as grow¬ 
ing in this country, reference will be made to it when de¬ 
scribing the Brgonia alba [ivhite bryony). 
^‘Nicotiana tabacum [Virginian tobacco ).— Corolla long, funnel- 
shaped, M'ith the segments sharp pointed and turned down¬ 
wards. Calyx permanent. Stigma capitate. Capsule four- 
valved at the apex, two to four-celled, many seeded. Leaves 
lanceolate,taper-pointed,decurrent. Flowers pink.^^—Bindley. 
The tobacco plant in its dried condition is familiar to most 
of us. It was introduced into this country from France in 
the year 1570, and on a larger scale from Virginia in 1586. 
There are several varieties cultivated in gardens in this 
country, but the only one that attains anything like perfec¬ 
tion is the Nicotiana rustica (Turkish tobacco), and even this 
is deficient in that pungency and narcotic power which dis¬ 
tinguish the tobacco grown in hot climates. The Nicotiana 
