[EU]Mr. S. Klein mentions a similar fact in connection with Bombyx quercus (Nature, vol. xxxv. p. 282).

[EV]Journal of Marine Biological Association, New Series, vol. i. No. 2, p. 211.

[EW]A friend of mine informs me that his limit is about 17,500 per second, 20,000 being quite inaudible.

[EX]Journal of Marine Biological Association, New Series, vol. i. No. 3, p. 251.

[EY]Of course, anglers will say that what may be true for pollack and other coarse and vulgar sea-fish does not apply to King Salmon or Prince Trout.

[EZ]"Senses of Animals," p. 117.

[FA]See a very interesting and lucid paper by Professor Crum Brown, whose name is intimately connected with this subject, in Nature, vol. xl. p. 449.

[FB]It is interesting to note that in the blind-fish (Amblyopsis spelæus) the semicircular canals are, according to Wyman, unusually large.

[FC]The dampers must, of course, be lifted by depressing the loud pedal.

[FD]"Special Physiology," p. 636.