Further Observations on the Locomotor System of Medusae . Immediately after severe handling of this kind, the retardation of contractile wavesis sometimes even more marked than here represented; but I think this may be partlydue to shock; lor on giving the tissue a little while to recover, the rate of the wavesbecomes slightly increased. (g) Anaesthetics likewise have the effect of slowing the rate of contractile wavesbefore blocking them. Taking, for instance, the case of chloroform, a narrow spiralstrip 28 inches long was immersed in sea-water containing a large dose of the anaesthetic ;the
Further Observations on the Locomotor System of Medusae . Immediately after severe handling of this kind, the retardation of contractile wavesis sometimes even more marked than here represented; but I think this may be partlydue to shock; lor on giving the tissue a little while to recover, the rate of the wavesbecomes slightly increased. (g) Anaesthetics likewise have the effect of slowing the rate of contractile wavesbefore blocking them. Taking, for instance, the case of chloroform, a narrow spiralstrip 28 inches long was immersed in sea-water containing a large dose of the anaesthetic ;the observations being taken at six seconds intervals, the following were the results:— MDCCCLXXVII. 5 I 724 ME. G. J. EOMANES GN THE LOCOMOTOE SYSTEM OE MEDUSiE. Pig. 15, Six seconds after transferrence to cMoroformSix seconds later ....... Six seconds later Six seconds later Six seconds later One second ........... *••••». In suck experiments, the recovery of the normal rate in unpoisoned water is , for instance, the case of a spiral strip in morphia:— Eig, 16. xn normal, vv ater ,..».,...«.•......••..»«..«...»••••..«•• Quarter of an hotir after exposure to morpMa . One minnte after strengtliening dose Ponr minutes later, and just before blocking of wave . Fifteen seconds later, wave continuing blocked ................ Immediately after passage of wave on restoration to normal sea-water Four minutes later Quarter of an hour later An bour later ..One second ....
Size: 1764px × 1416px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1870, booksubjectproceed, bookyear1877
