Framed Prints
Framed Print of The crayfish : an introduction to the study of zoology
The crayfish : an introduction to the study of zoology. Crayfish. THE THEORY OF MOSAIC VISION. 123 Each visual pj'ramid, isolated from its fellows by its coat of pigment, may be supposed, in fact, to play the part of a very narrow straight tube, with blackened walls, one end of which is turned towards the external world, while the other incloses the extremity of one of the nerve fibres. The only light which can reach the latter, under these circum- stances, is such as proceeds from points which lie in the. Fig. 29.—Diagram showing the course of rays of light from three points X, y, x, throu. The crayfish : an introduction to the study of zoology. Crayfish. THE THEORY OF MOSAIC VISION. 123 Each visual pj'ramid, isolated from its fellows by its coat of pigment, may be supposed, in fact, to play the part of a very narrow straight tube, with blackened walls, one end of which is turned towards the external world, while the other incloses the extremity of one of the nerve fibres. The only light which can reach the latter, under these circum- stances, is such as proceeds from points which lie in the. Fig. 29.—Diagram showing the course of rays of light from three points X, y, x, through the nine visual rods (supposed to be empty tubes) A—I of a compound eye ; a—i, the nerve fibres connected with the visual rods. direction of a straight line represented by the produced axis of the tubes. Suppose A—I to be nine such tubes, a—i the corre- sponding nerve fibres, and x y z three points from which light proceeds. Then it will be obvious that the only light. 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 work.. Huxley, Thomas Henry, 1825-1895. London : Kegan Paul, Trench, Tru?bner and Co. © The Book Worm
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Media ID 49121572
Adaptation Anatomy Animal Behavior Behavioral Crayfish Crustaceans Ecological Freshwater Mosaic Perception Physiology Role Sensory Studies Systems Textbook Vision Zoological
Modern Frame 14"x12" (36x31cm)
Ready to Hang Contemporary Framed Prints adds style, protection, and a polished touch to your space - effortlessly.
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Wood effect frame, card mounted, 10x8 fade resistant photo print. Overall outside dimensions 14x12 inches (36x31cm). Environmentally and ozone friendly, 40mm wide x 15mm Polycore® moulding has the look of real wood, is durable and light and easy to hang. Biodegradable and made with non-chlorinated gases (no toxic fumes) it is efficient; producing 100 tons of polystyrene can save 300 tons of trees! Prints are glazed with lightweight, shatterproof, optical clarity acrylic (providing the same general protection from the environment as glass). The back is stapled hardboard with a sawtooth hanger attached. Note: measurements provided are estimated outer dimensions, which include both the image and the frame. While we aim to keep sizing consistent, exact dimensions may vary slightly due to differences in print size or production requirements, which may result in a variation in the overall size (up to approximately 2.5cm (1"))
These are individually made so all sizes are approximate
Estimated Image Size (if not cropped) is 24.4cm x 18.9cm (9.6" x 7.4")
Estimated Product Size is 36cm x 31cm (14.2" x 12.2")
