Animal and vegetable physiology, considered with reference to natural theology, by Peter Mark Roget .. . A similar combination of radiating and cir-cular fibres is employed in the construction offlat, or slightly concave muscular disks, whichare thus rendered capable of exerting a strongforce of adhesion to the surfaces on which theyare applied. In these organs the circular fibresare placed at the circumference, and the radi-ating fibres in the interior of the sucker, (seeFig. 48); so that, while the margin of the diskis closely applied to the object, the force result- MUSCULAR POWER. 137 ing
Animal and vegetable physiology, considered with reference to natural theology, by Peter Mark Roget .. . A similar combination of radiating and cir-cular fibres is employed in the construction offlat, or slightly concave muscular disks, whichare thus rendered capable of exerting a strongforce of adhesion to the surfaces on which theyare applied. In these organs the circular fibresare placed at the circumference, and the radi-ating fibres in the interior of the sucker, (seeFig. 48); so that, while the margin of the diskis closely applied to the object, the force result- MUSCULAR POWER. 137 ing from the contraction of the circular fibresis exerted to remove the central portions fromthe surface of attachment, and thereby tendsto create a vacuum underneath the disk ; thetwo surfaces remain, therefore, strongly attachedby the atmospheric pressure, which acts on theirouter sides. An apparatus of this kind, as weshall afterwards find, is met with very frequentlyamong the lower orders of the animal
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Keywords: ., bookcentury18, booksubjectnaturaltheology, booksubjectphysiology
