3. From this latter point to below the lower jaw, X, Q, when the head is naturally placed parallel to the shoulders, E, H.[59]
[59] MM. Goubeaux and Barrier replace this by the following: ‘From the insertion of the neck into the chest to the lower border of the lower jaw, X, Q, when the head is parallel to the shoulder.’
4. From the nape to the nostrils, n, n′.[60]
[60] MM. Goubeaux and Barrier add: ‘Or to the commissure of the lips.’ It is thus, besides, that Bourgelat measured the head for comparison with the crupper (see [p. 266, paragraph 4]).
The measure of half of the head also acts as a good guide for the construction of the horse, when we know that it frequently applies to many of the parts—to wit:
1. From the forehead above the eyes, perpendicular to the line which is tangent to the lower jaw, P, Q.
2. Outline of the neck at the level of the base of the head, Q, L.[61]
[61] Proportion indicated by Bourgelat (see [p. 267, paragraph 9]).
3. From the crown of the fore-foot to below the knee, T, T′.
4. In the legs, from the base of the fetlock to that of the ham, U, V.