The water of the Nile, when at its lowest, covers 7 cubits of the Nilometer, and when it reaches a height of 15-2/3 cubits the Sheikh of the Nile proclaims the Wefa, i.e., that the height of the water necessary for irrigating every part of the Nile valley has been attained. The signal is then given for the cutting of the embankment.
A small horse generally stays better, can come out oftener, is handier, and not so likely to hurt one if he falls. For the Shires I do not think a lady's hunter should be much under 15-2, and he must be a big jumper and well bred.
For instance, a tall woman with a "comfortable" figure would be suitably mounted on a horse 16 hands or more high, whereas a light girl of medium height would find an animal of say 15-2 as much as she could comfortably manage; for we must remember that big horses, as a rule, take a good deal of "collecting."