the pleasure secured by the player from his playing remains purely subjective. But, from this point on, the further development to tone-effects that are objective and are richer in gradations is reached by simple transitions effected by association. The _one_ string, taken over from the bow used in the chase, is no longer sufficient. Hence the bridge appears, which consists of a piece of wood whose upper side is fastened at the middle of the bow and whose lower side is toothed for the reception of several strings. The strings also are perfected, by being made of threads detached from the bamboo of which the bow is constructed. Then follows a second important advance. Instead of taking the end of the bow in his mouth and using his own head as a resonator, the player makes use of a hollow gourd and thus renders the tone objectively audible. The best and most direct point of connection between the gourd and the bow proves to be the end of the stick that carries the bridge. It is now no longer the head of the player that furnishes the resonance, but the substituted calabash. In its external appearance the calabash resembles the head--indeed, upon other occasions also, it is sometimes regarded as a likeness of the head, and eyes, mouth, and nose are cut into its rind. Thus, the association of the gourd with the head may possibly have exerted an influence upon this step in the development of the musical instrument. Perhaps the inventor himself did not realize until after the artificial head came into use that he had made a great advance in the perfection of his instrument. His music was now audible to others as well as to himself.