Note 18 — Chapter X · NEW SOUTH WALES.

It is a singular fact, that the aboriginal natives of New South Wales, as well as the cattle that roam at large in its woods, invariably choose the top of a moderately elevated hill to sleep on during the winter months. The reason is, that the hills are always warmer than the valleys, and are consequently resorted to in winter; while the latter are chosen in summer as camping-ground by man and beast. I have often been surprised, when riding about the bush in winter, at feeling a current of warm air on the top of a range of hills, having myself just ascended from the neighbouring valley where the breeze was chilling. These warm breezes on the hill tops blow from the north-west, and may be nearly related to the summer hot winds, cooled on reaching the latitude of 34° in the winter season. Be that as it may, they are not strong enough to warm the valleys, though their influence on the hills is very agreeable to the traveller.