The vertebrae of the hip measure two feet and three inches.

The tail measures from thirty-two to forty feet.

We thus obtain, as a moderate estimate of the total length of the animal, sixty-eight to seventy feet.

The restored skeleton, published by Mr.
J.B.Hatcher in July, 1901, and partly embodying our results, gave to science the first really accurate knowledge of the length of these animals, which hitherto had been greatly overestimated.

The highest point in the body was above the hips; here in fact, was the center of power and motion, because, as observed above, the tail fairly balanced the anterior part of the body.
The restoration by Mr.Knight is drawn from a very careful model made under my direction, in which the proportions of the animal are precisely estimated.