The exterior of the horse / by Armand Goubaux and Gustave Barrier.

  • Armand Goubaux
Date:
1892
Catalogue details

Licence: Public Domain Mark

Credit: The exterior of the horse / by Armand Goubaux and Gustave Barrier. Source: Wellcome Collection.

    38/954 (page 4)
    at each instant are displaced in different directions, and thus are modified the weiglit and volume of the organs in which the molecular changes take place. Other displacements, much more considérable, indeed even more important froni the point of view which concerns us, are due to the actions of the organs, the different attitudes of the body, or the movements which are caused by locomo- tion. We understand, then, how difficult becomes the exact détermination of the centre of gravity, and the great importance of sufficientlv appreciating its Fig. 1.—Situation of the centre of gravity in the horse. displacements when it is a question of obtaining from it the conditions of equi- librium. According to Borelli,1 the centre of gravity in the horse is situated in the middle of the heiglit of the trunk, and the line of gravitation falls through the centre of the quadrilatéral formed by the four members. According to Professor Colin,2 it almost corresponds to the intersection ot two iines, one of them (vertical) passing back of the xiphoid appendix of the sternum, the other (horizontal) separating the middle from the inferior third ot 1 Borelli, De motu animalium, Naples, 1734, p. 126. 2 G. Colin, Traité de physiologie comparée des animaux, 3e édition, Paris, 1886, t. i. p. 460.