The class-book of anatomy : designed for schools, explanatory of the first principles of human mechanism, as the basis of physical education . eadilycontemplating a painting. Two others are given, makingsix in the whole, to express, principally, the passions ofthe mind : they are denominated the oblique, in conse-quence of their oblique movement of the eye. One rollsit upward and inward, as in viewing a button, midway onthe forehead ; the other, going through a loop, is so purelymechanical, that it has been the theme of admiration withphilosophers in all ages, carries the eye downward and out-
The class-book of anatomy : designed for schools, explanatory of the first principles of human mechanism, as the basis of physical education . eadilycontemplating a painting. Two others are given, makingsix in the whole, to express, principally, the passions ofthe mind : they are denominated the oblique, in conse-quence of their oblique movement of the eye. One rollsit upward and inward, as in viewing a button, midway onthe forehead ; the other, going through a loop, is so purelymechanical, that it has been the theme of admiration withphilosophers in all ages, carries the eye downward and out-ward. The last action may be shown by looking at a but-ton, laid on the shoulder. Although these oblique musclesexist in monkeys and nearly all tribes of quadrupeds, they areimperfectly developed ; showing most conclusively thatthey were designed for expressing the feelings and passionsof man — an ineffable language, which all the brutecreation have the sagacity to understand. When one ofthe four straight muscles is shorter than its fellow on theopposite side, it produces the cross-eye or squinting. 208 ANATOMICAL CLASS BOOK. Fig. Explanation of Figure plan exhibits the muscles, viewed obliquely from the upperand outer side of the right eye. a. The eye-ball. b. Part of the upper eye-lid. c. Tunica Conjunctiva, or continuation of the common skin of theforehead, which turns over the edges of the lids, and is finally car-ried over the front of the globe, but perfectly transparent at thispoint. d. The integuments of the right side of the e. The optic nerve. / The four straight muscles, with the levator or raising muscleof the upper eye-lid, together with the superior oblique muscle em-bracing the optic nerve where it enters the orbit. g. The levator of the lid drawn aside. h. Levator occuli, or superior straight muscle, — to roll the ballupward i Abductor occuli, rolls the ball outward. ft. Adductor occuli, rolls it towards the nose. /. Depressor occuli, rol
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Keywords: ., bookcentury1800, bookdecade1830, booksubjectanatomy, bookyear1834
