The exterior of the horse . 208 THE EXTERIOR OF THE HORSE. be carried much more in advance when it is inclined than when it isstraight. Let us represent hy AB and A^B (Fig. 60) these two different directions ; by£M and B^M^ two vertical lines drawn from the superior extremity of each. Fig. 60. shoulder; finally, by ^Cand A^C^, equal amplitudes of the two scapular oscilla-tions. It is assumed, by hypothesis, that A3fy- A^M\ Whence it follows thatAM-{-AC h > AM + AC, or, in other words, that MCh yMC. Therefore, for an equal arc described by the point of each shoulder,the more inclined will ca
The exterior of the horse . 208 THE EXTERIOR OF THE HORSE. be carried much more in advance when it is inclined than when it isstraight. Let us represent hy AB and A^B (Fig. 60) these two different directions ; by£M and B^M^ two vertical lines drawn from the superior extremity of each. Fig. 60. shoulder; finally, by ^Cand A^C^, equal amplitudes of the two scapular oscilla-tions. It is assumed, by hypothesis, that A3fy- A^M\ Whence it follows thatAM-{-AC h > AM + AC, or, in other words, that MCh yMC. Therefore, for an equal arc described by the point of each shoulder,the more inclined will carry the lower or distal extremity to a positionthe more anterior. This will also allow a greater extension of the humerus, and the forearm will reach for-ward to a point more in advance. It iscertain, a priori, that a straight shoulderis capable of a greater oscillation forward,but it must be remembered that the degreeof the scapular movements is the resultof the functional shortening of the ele-vator muscles of the point of the shortening alone gives the measureof rotation, a measure which we know isproportional to the muscular length. Wehave sufficiently dwelt on this particularpoint à propos to the neck without againmaking reference to it here. Another advantage o
Size: 2167px × 1153px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booksubjecthorses, bookyear1892
