At tlio sand hills at Botany Bay, not far from the spot where Captain Cook huded, the sand, wheu dis placed by pressure from above or disturbed by the hand or stick, emits a musical. note, which appears to vary in iuteusit/ according to tLe degree of moisture present. The saino phenomenon lias.been reported from many other localities. The de sort of Lob-Nor, in China, is said to bo filled with extraordinary bar monies, and the sand hills of Afghan istau and Arabia are also known to givo forth musical sounds. Tho " barking sands" of the Island of Kauai, in the Hawaiian Islands, emit' sounds which have ken compared to the bark of dog. When dry the sand is very mobile, and when dis turbed rolls down the. incline in wave lets, emitting a deep tremulous bass bass note. The natives attribute tho sounds to tho spirits of-tho dead, who grumble at being disturbed, sand dunes having been in common use as burial places, especially in early times. The Hawaiian Island possess sovoral other examples of these " barbing sounck" The most notable of '■ singing mountains is the Jebel Niigous, oi , "Mountain of the Bel," in the desert of Mount Sinai, on the Gulf of Suez. On its western and northern sides are sovoral large banks of blown saud inclined at highaugle3. The sand on oue of the slopes, at the north west end of the h 11, yields a deep resonance when itslideodown tho incline, either by the force of I wind or the action of man. Thi3 j bank is 890 ft. high, and the note pro duced by the rolling down of a large quantity of sand resembles that of a deep bass organpipe.
