. The anatomy and physiology of the human body. Containing the anatomy of the bones, muscles, and joints; and the heart and arteries . consequently, distinct lunniinous circles will be thrown on theplain : again, if the plain surface be opposed to the rays, afterthey have formed their focus, and arc again dispersing afterhaving crossed, the same unequal eifect of light and dark cir-cles will be thrown on it; though now, the rays of the rightside of the pencil B D F, will form the left of the pencil F G h. How the changeablestate of the rays produ- • - JB^^^^ > i ^^ces the indistinctness oft
. The anatomy and physiology of the human body. Containing the anatomy of the bones, muscles, and joints; and the heart and arteries . consequently, distinct lunniinous circles will be thrown on theplain : again, if the plain surface be opposed to the rays, afterthey have formed their focus, and arc again dispersing afterhaving crossed, the same unequal eifect of light and dark cir-cles will be thrown on it; though now, the rays of the rightside of the pencil B D F, will form the left of the pencil F G h. How the changeablestate of the rays produ- • - JB^^^^ > i ^^ces the indistinctness ofthe near-sighted eye,may be understood fromthis (11.) diagram.—When the rays a strikethe convex surface of thecornea, part of them willbe reflected from the sur-face of the cornea, in thedirection of the lines bB, when they will conse-quently strike upon theconvex surface of thelens in luminous rings,these rings will be stillfarther multiplied anddiminished in diameter,in being in pait trans-mitted, in part reflected, from the surface of the lens c, andvitreous humour d d. These effects of the alternate disposi-tion of the ra
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Keywords: ., bookcentury1800, bookidanatomyphysiolog, booksubjecthumananatomy
