498 
REVIEW—GKOGNIKk’s LECTURES. 
First, The method of harnessing and managing the animals 
employed either in agriculture, or in cart or waggon work ; their 
regimen, the employment of their strength, and a comparison 
between them. 
Secondly, The management and regimen of saddle-horses, 
draught-horses, and carriers’-horses ; their use for all other ser¬ 
vices beside those of ao^riculture. 
Thirdly, The particular regimen of troop horses, race horses, 
hunters, &c. 
Fourthly, The proper management and treatment of milch 
cows. 
Fifthly, The secretion of milk ; the circumstances which in¬ 
fluence this function, and its produce. 
Sixthly, Milk and milking. 
Seventhly, Wool, hair, feathers, silk, honey, and wax. 
Eighthly, The produce of the dung-heap ; the sheep-fold, &c. 
Ninthly, Fattening; its physiological conditions, the means 
by which it is accomplished, and its produce. 
Tenthly, The qualities and consumption of food; destruction 
of animals, under the relation of medical police and public eco¬ 
nomy. 
Such is the prospectus of the subjects that will be treated of 
in the course of veterinary therapeutics by M, Grognier: but, 
as he remarks, we must not consider it as an absolute programme, 
much less as a table of contents ; it is only a plan, a project 
from which he may swerve a little, but which will give a sum¬ 
mary idea of what the wmk will be when it is completed. 
After this exposition of his subject, M. Grognier enters into a 
consideration of the first. The differences which may exist in the 
weight of the air, its temperature, its dryness, and the influ¬ 
ence of these on the animal economy, are treated of in one 
chapter. The next contains several speculations on the agency of 
light, and of some atmospheric phenomena. The alterations 
which result from the intermixture of deleterious substances with 
air form the subject of the third chapter ; and here, beside the 
gases which are habitually foreign to the air, and which, never¬ 
theless, often contribute to vitiate it, the emanations from 
marshes, much oftener hurtful, attract particular attention. In 
speaking of their dispersion through the air, M. Grognier sup¬ 
poses that they rise to the height of 200 or 300 toises, that they 
do not extend themselves horizontally more than 150 toises from 
the focus of infection, and cannot be transported much further 
by the winds. Without denying the truth of this assertion in 
some cases, we must say, that many circumstances may probably 
influence its dispersion. Rigaud dc ITsle, cited by M. Grog- 
