This same process of evolution is seen in the growth of each individual. The child, seeing grimalkin stalk stealthily into the room, points the finger and says "cat." This is the complete expression of itself on that subject. It is the sum total of its knowledge of zoology at that particular moment; and a long process of development must follow before it will refer to the same animal as a "Felis Domestica."
In a similar way musical expression keeps step with musical ideas. In the beginning musical ideas were short, simple, fragmentary, monosyllabic, mere germs of melody (adherents of the germ theory will make a note of this). The Arab with his rudimentary fiddle will repeat this fragment of melody [Illustration: Figure H] by the hour, while a company of his unlaundered brethren dance, until exhausted, in dust to their ankles, with the temperature near the boiling point. This musical monosyllable is ample to satisfy his artistic craving. In other words it is the complete musical expression of himself.
The following is a complete program of dance music for the aborigines of Australia. [Illustration: Figure I] The repetition of this figure may continue for hours. If it were inflicted on a metropolitan audience it would result in justifiable homicide, but to the Australian it furnishes just the emotional stimulus he desires.
[Illustration: Figure J] This one from Tongtoboo, played Allegro, would set the heels of any company, ancient or modern, in motion.
These people may be said to be in the rhythmic stage of music, that is, a stage of development in which a rhythmic movement which serves to incite the dance furnishes complete artistic satisfaction.
As it is a long distance from the monosyllabic expression of the child to the point where he can think consecutively in polysyllabic dissertation, so it is an equally long distance from the inarticulate musical utterances of the barbarous tribes to the endless melodies of Wagner, which begin at 8 P. M. and continue until 12.15 A. M. without repetition.
Following the course of music from the beginning we shall see that it has kept pace with civilization. As the race has grown mentally it has expressed itself in a larger and more perfect way in its literature, its painting and music. Physically the race has not grown perceptibly in the last five thousand years, but mentally its growth can scarcely be measured. If we follow each nation through the past thousand years we shall see that its art product has not only kept pace with its development, but that in its art we may see all of its racial characteristics, those habits of mind which are peculiarly its own. A nation left to itself will develop a certain trend of thought which will differentiate it from all other nations. A trend of thought which will affect its art, literature, politics, religion, and in course of time will produce marked physical characteristics. This is noticeable in all nations which have lived long unto themselves.