REVIEW, 
570 
fourth hour, on account of the young 
animal having to support its own life, 
the same as it would out of its mother. 
mother supports its life. These differ- 
ences are readily accounted for by any 
one understanding the mechanism of 
foetal life in the two species of animal as 
well as the anatomy of the uterine 
organ. 
Which differences M. Donnarieix explains as follows : 
MARE. 
8. In the mare, the neck of the foal 
being very long, the head is commonly 
found deeply buried in the flank when- 
ever it is turned backwards. The ope- 
rator has very great difficulty in reach- 
ing it with his hand — indeed, often he 
finds it impossible to re-instate it in its 
natural position : the loop slips down 
the neck of the lower jaw, and the ope- 
ration has continually to be renewed. 
It is hardly possible to fix a cord there, 
the neck being so short, and the foetus 
having no teeth. 
9. In the mare, when once the am- 
nion is emptied, the introduction of the 
hand becomes difficult, on account of 
the loss of the viscous fluid. The geni- 
tals grow dry, and a considerable efflux 
of blood ensues. The resistance made 
by the foetal membranes to the manipu- 
lations, either to ascertain the position 
of the foetus or for the purpose of turn- 
ing, together with the struggles of the 
dam, who now and then drops down as 
though she were dead, are so many 
difficulties one has to overcome in de- 
livering the mare. 
cow. 
8. In the cow, the neck of the calf 
being shorter and thicker, the head is 
less twisted, and the operator can with 
greater ease bring it back into its nor- 
mal position. Besides, as the lower jaw 
possesses teeth, and has a contracted 
neck, the slip knot of the cord does not 
slip off it, and therefore turning of the 
head becomes an easier affair. 
9. In the cow, the genitals are con- 
tinually lubricated by a viscous fluid, 
which, while it facilitates the introduc- 
tion of the hand, renders easy any re- 
quired turnings, and favours the par- 
turient operations. Added to which, 
any movement made by cows during 
delivery are not, in general, of much 
consequence. 
The American Veterinary Journal; devoted to the Diffusion t of 
Veterinary Knowledge. Edited by George H. Dadd, M.D. Royal 
8vo, pp. 32. Boston, Mass. 
All hail to the transatlantic veterinary sister-journal ! — the 
first-born of its species in the western hemisphere. Through 
its pages we hope to be informed, from time to time, of what is, 
veterinarily, transacting in the new world while we sit prosing in 
one corner of the old. The first number, which has just reached us, 
may boast of the variety of articles it contains within hardly 
more than half the number of the pages of our own journal. 
It, also, has a frontispiece of an engraving of an “ English 
