The class-book of anatomy : designed for schools, explanatory of the first principles of human mechanism, as the basis of physical education . , it eventually bends the point of thesternum inward, where it will finally remain. The conse-quence is, — the capacity of the chest is diminished, anddiseases of the lungs, among a catalogue of other maladies,may result from it. Children should be warned of thisliability to disease, before a habit is formed that is formi-dable when confirmed. This never becomes solid like other bones, even in ex-treme old age. Between its perpendicular sides, as seenin
The class-book of anatomy : designed for schools, explanatory of the first principles of human mechanism, as the basis of physical education . , it eventually bends the point of thesternum inward, where it will finally remain. The conse-quence is, — the capacity of the chest is diminished, anddiseases of the lungs, among a catalogue of other maladies,may result from it. Children should be warned of thisliability to disease, before a habit is formed that is formi-dable when confirmed. This never becomes solid like other bones, even in ex-treme old age. Between its perpendicular sides, as seenin the plate, and the front end of the rib, a strip of carti-lage is interposed, a kind of substance which is familiarlyknown by the name of gristle. The bony wall therefore,over the heart and lungs, is decidedly the weakest part ofthe frame. There is a radical defect in the seats of all the school-rooms in this country. There should be a convexity be-hind, to fit the hollow of the baok. The seat would bemore comfortable, and prevent the bones of the chestfrom being cramped down and binding the digestiveorgans. ANATOMICAL CLASS BOOK. 23. Explanations of Fig. the place where the collar bone isjoined ; C where the first rib is articulated ;c, d, e, f, g, show the number of pieceswhich are united into one : the ensiformcartilage, or tip of the sternum, — bent outof place, very frequently, to the great det-riment of the individual, is marked h. Very small children, in schools, become excessivelyweary, after sitting a little time on stiff benches — arcsleepy, and can scarcely be kept awake. This is naturesmode of seeking relief from the pressure and gravity ofthe chest, which is confining both bones and should certainly be permitted, either to have a re-cumbent posture, which is thus indicated, or they shouldbe kept but a very little time in one position. Malforma-tion of the bones, narrow chests, coughs, ending in con-sumptions and death in middle life, beside
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Keywords: ., bookcentury1800, bookdecade1830, booksubjectanatomy, bookyear1834
