. Comparative physiology of the brain and comparative psychology. Brain; Psychology, Comparative. EXPERIMENTS ON ACTINIANS 57 required one hour. The animal remained in this position for two days, and then crawled out of the glass. In analysing the conditions that determine the righting of the Cerianthus in this case, two circum-. FIG. 14. CERIANTHUS REGAINING ITS NORMAL ORIENTATION. It was placed on the net horizontally, and within half an hour had regained its normal vertical position, by pushing itself through the meshes of the net. stances must be taken into consideration, namely, gravitati
. Comparative physiology of the brain and comparative psychology. Brain; Psychology, Comparative. EXPERIMENTS ON ACTINIANS 57 required one hour. The animal remained in this position for two days, and then crawled out of the glass. In analysing the conditions that determine the righting of the Cerianthus in this case, two circum-. FIG. 14. CERIANTHUS REGAINING ITS NORMAL ORIENTATION. It was placed on the net horizontally, and within half an hour had regained its normal vertical position, by pushing itself through the meshes of the net. stances must be taken into consideration, namely, gravitation and the contact-stimuli. It can be easily shown that gravitation alone is able to produce the above-mentioned reaction of the Cerianthus. A wire net, whose meshes are so fine that the body of a Ceri- anthus can only be drawn through them by force, is laid horizontally upon a glass standing in the. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Loeb, Jacques, 1859-1924. New York, G. P. Putman's Sons; [etc. , etc. ]
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