522 ON THE REPRODUCTIVE SYSTEM OF ANIMALS. 
were far preferable, and the best of these he considered to be liq. 
ammonise acet. Great benefit was also to be derived from mineral 
tonics. They had a large class of medicines from which to choose, 
and they must choose according to the condition of the animal, and 
the stage which the disease had assumed. {Applause.) 
In conclusion he observed, that it must be evident from the 
description he had given of this malady, that there could be no 
specific for it. And it was also evident that he who undertook the 
treatment of such a disease without a knowledge of its nature and 
of the structure and functions of the organs it affected, was acting 
like an ordinary artizan who set about the repair of a machine the 
wheels and levers of which he was entirely ignorant of {Hear, hear.) 
And now, having completed his task, it only remained for him to 
thank them for the kind attention he had received. He had made 
no attempt, by the selection of high-sounding terms or eloquence 
of diction, to render the subject interesting, preferring to convey 
to them in familiar language a knowledge of those scientific prin¬ 
ciples which in practice could not fail to promote the objects of this 
national and important Society. {Loud applause.) 
Corrected from the Norwich Mercury. 
A few Observations on the Reproductive System of 
Animals, 
HAVING A SPECIAL REFERENCE TO CROSS-BREEDING IN THE 
BOVINE RACE. 
By James M'Gillavray, V.S. Huntly. 
SECT. I.— Physiology of the Reproductive System. 
I wish to draw the attention of cattle-breeders to the physiolo¬ 
gical fact—‘That when a pure animal, of any breed, has been 
pregnant to an animal of a different breed, such pregnant animal is 
herself a cross ever after; the purity of her blood being lost in 
consequence of her connexion with the foreign animal.’ 
To many this may appear at first sight a startling announcement; 
but if the intelligent farmer will patiently, attentively, and candidly 
accompany me through the following short paper, I hope to be able 
to convince him that there is a reality in the proposition. Soon 
after a prolific copulation, the impregnated ovum (the germ of the 
future animal) is separated from the ovary, and, being grasped by 
the fimbriated edges of the Fallopian tube, descends through that 
channel, and enters the corresponding horn of the uterus. After 
