438 
REVIEW — VARIOLA OVINA. 
adopted as one means to stay its ravages ; and, as we shall here- 
after shew, vaccination cannot be used in its stead.” 
We do not find fault with Mr. Simonds for refusing to “ pin his 
faith upon the sleeve of any man on the contrary, he has his full 
right to the maxim, 
“ Nullius addictus jurare in verba magistri.” 
In a case, however, where experiments scanty, if not isolated, come 
to be opposed to such a host of facts, touching the point in ques- 
tion, as stand on record, we do think that it becomes our duty to 
yield to the weight of authority, even though that authority be not 
of indigenous growth. 
Vaccination has been tried. And though it cannot be said to be 
altogether powerless or resultless on sheep, yet do the effects ob- 
servable from it shew that its operation on ovine blood is extremely 
feeble — too feeble, indeed, to admit a hope of its turning out to 
them the same protecting influence against the small-pox as it has 
providentially proved to human kind. “ After the numerous ex- 
periments, the results of which has been given,” says Hurtrel 
d’Arboval, in his article “Vaccination,” “coupled with the infer- 
ences naturally deducible from them, there appears to us no reason- 
able room for doubt, nay, for further withholding conviction, that 
vaccination proves no preservative to sheep against the small-pox ” 
But, not only is variola ovina both contagious and infectious, it 
is what may be called cubative as well ; by which we mean, it 
has the property, after being caught or taken, of lying latent or 
dormant in the constitution for a certain length of time before it 
breaks out, or, by what we denominate “ symptoms,” manifests it- 
self. Against the invasion of a formidable and dangerous malady 
like this, every body would be for opposing effective barricades ; 
but when we come to consider how insidious as well as formidable 
is the nature of our assailant, it becomes not so easy as it might 
at first have appeared to construct such a cordon sanitaire as shall 
perfectly insure the safety of our flocks at home, at the same time 
that it does not offend the traffic in sheep and cattle carried on be- 
tween this country and the continent to the reciprocal advantages 
of both. We have no book in our library which furnishes us with 
the laws of importation and exportation, as pertaining especially to 
cattle and sheep; but Mr. Simonds has supplied us with a sug- 
