813 



In its turn the latter gets lost again in the ordinary entotic noises. 

 //,. B. Very likely Ihe after-sound comes close upon the stimulus. 

 It is short (± 17^ sec.) and very liigli. Less often than in the case 

 of /\ it is followed directly by an interval of absolute or relative 

 silence, as mostly a feeble musical tone is heard whose pitch lies 

 between that of the after-sound and the stimulus and whose duration 

 varies from 2 — S'/s sec. 



Whenever the musical tone is not heard, the normal noises, 

 which, while intensifying gradually, follow the after-sound directly 

 or are heard after a space of absolute or relati\e silence, possess 

 a certain pitch. Eventually the space of silence lasts 5 — 9,5 sec. 



M. In three cases a tone is heard instantly afier Ihe whistle is 

 blown. It is rather higher than jis,, gradually grows less intense, 

 to be replaced after 4 — 7 seconds by a typical murmur. In the 

 other cases the tone and the ty|)ic,al murmur occur simultaneously, 

 lis pitch (invariably i/w^) gets lost after 6 — 8 sec, when the pure 

 murmur continues to flow (as is ever the case) into the normal noises: 

 sometimes a sti'ain is felt. 



a^. B. The after-sound is short (± I '/s sec), feeble, and high-pitched. 

 Only twice a vague sensation of strain is announced. Close upon 

 the after-sound follows a "dark" space (period of absolute or relative 

 silence of 10.5 — 11 sec). At times it is succeeded by a feeble musi- 

 cal tone by the side of which the normal noises are generated and 

 reinforced so as to supersede the tone, whose pitch lies between 

 that of the after-,sound and the stimulus. Every now and then a 

 high bird's uote interferes with these noises. 



M. Ill every experiment the subject notices inmiediately after the 

 stimulus a murmur, with markedly varying pitch and intensity, the 

 former fluctuating between d^ and r/,. The pitch gradually disap- 

 pears so that only the typical murmur is left. Occasionally a great 

 strain, which sometimes causes pain. 



c'/.s-, B. Short (tl sec) and feeble afler-sound, followetl in 5 out 

 of 6 cases' by a "dark" space, which lasts frOm 13 to IH seconds. 

 Little by little the normal noises recur with growing intensity. 



M. Immediately after the stimulus in all cases a murmur, evidently 

 of a definite pitch ; it most often belongs to the 6''' octave. The 

 intensity of the tone decreases by degrees, so that at la.st only a 

 typical murmur remains, in which, however, a pilch is still plainly 

 discernible. At times the quality of this murmur is modilied, both 

 the inlensity and the richness being diminished; the ]>ilcli also is 

 gradually lowered. 



«3 B. The after-sound is short (+1.1 sec), feeble and high. Some- 



