country, the collections having been formed by different persons independently of each other, and he finds all exhibiting the same peculiarity, he has no reason to doubt that it really exists in the music of that country. Nothing gives to the popular music of a country a more distinctive feature than the order of intervals on which it is founded; when the scale has been clearly ascertained, such other characteristics as the music possesses are generally soon discerned with sufficient exactness to be definable by the experienced musical inquirer. The notations of musical scales of uncivilized nations emanating from European travellers who have heard the people sing, are certainly to be received with caution. Of this kind of communication is, for instance, the notation of the vocal effusions progressing in demi-semitones of the Marquesas Islanders at their cannibal feasts, written down by Councillor Tilesius, and published in the Allgemeine Musikalische Zeitung, Leipzig, 1805; or the notation of songs of the New Zealanders containing smaller intervals than semitones, which Mr. Davies has written down, and which Sir George Grey has published in his 'Polynesian Mythology of the New Zealand Race' (London, 1855). It is, however, often possible to ascertain the musical scale of a nation with exactness by examining the musical instruments appertaining to the nation. Thus, for instance, the Chinese close some of the finger-holes of their flutes by sticking pieces of bladder over them, in order to ensure the pentatonic scale; the Javanese construct instruments of percussion with sonorous slabs of metal or wood, arranged in conformity with the pentatonic scale; the Arabs, and most Mohammedan nations who have cultivated their music after the system of the Arabs, possess wind-instruments of the oboe kind on which the finger-holes are placed in accordance with the division of seventeen intervals in the compass of an octave; and also several stringed instruments of the Arabs, which are supplied with frets made of gut wound round the neck or finger-board, exhibit the same order of intervals; again, certain stringed instruments of the Hindus contain a number of little bridges, stuck with wax beneath the strings so as to produce, on a string being pressed down on the bridges successively, twenty-two intervals in the compass of the octave. Other instruments have marks on the sound-board as a guide to the performer where he has to press down the strings in exact conformity with the established scale.