[271] Longet, Traité de Physiologie, II. 240.

[272] Dalton, Human Physiology, Philadelphia, 1859, p. 362.

[273] Dalton, p. 362.

[274] Dalton, p. 363.

[275] Flourens, p. 89.

[276] Leyden in the Berliner klinische Wochenschrift, 1867, No. 7. Meissner, Jahresbericht über Physiol., 1867, p. 410.

[277] Voit in the Sitzungsberichte der Münchener Academie, 1868, p. 105. Comp. also Goltz in Pflüger’s Archiv, Bd. XIV. 435.

[278] Vulpian, Système Nerveux, 542–48.

[279] For other examples see Gintrac, Pathologie Interne, 1868, VI. 51–57.

[280] If the water is perfectly still the fish sinks to the bottom and remains motionless until the water be stirred. Mere contact does not suffice; there must be intermittent pulses from the moving water.