The class-book of anatomy : designed for schools, explanatory of the first principles of human mechanism, as the basis of physical education . stapes — or stirrup,almost a miniature fac simile of a saddle stirrup. Birdshave but two of these, of which the malleus is most devel-oped. Turtles have but one, the malleus ; and reptiles,as far as personal dissection warrants, have but two. Inthese classes, there is a departure in form, from those weare contemplating in our own species. Fig. 75. Explanation of Here is presented amagnified view of theear bones. The o$ or-biculare, or round bone
The class-book of anatomy : designed for schools, explanatory of the first principles of human mechanism, as the basis of physical education . stapes — or stirrup,almost a miniature fac simile of a saddle stirrup. Birdshave but two of these, of which the malleus is most devel-oped. Turtles have but one, the malleus ; and reptiles,as far as personal dissection warrants, have but two. Inthese classes, there is a departure in form, from those weare contemplating in our own species. Fig. 75. Explanation of Here is presented amagnified view of theear bones. The o$ or-biculare, or round bone,is not represented, be-ing considered by someas only an appendageof the malleus. The malleus knownby its long arms; a, b,c, d, e, mark the samepoints as in Figure inchus, resem-bling a molar tooth,arms, is in the same position as in Figure 73 ; the let-same reference. The star points out the articulatingmalleus. Irom the foregoing remarks, will recognise the stapes,-ab its head; c the neck; d anterior crus; e thebasis. drawing represents another view of the stapes, seena its cartilage ; b anterior ; c posterior ; d the having shorteters have thesurface for the Any personby its shape -second \f the The fourthfrom above — 190 ANATOMICAL CLASS BOOK, As these bones are placed in the drum barrel, onejoined to the extremity of the other, they make a compoundlever, —the object of which is, to have the freest and long-est extent of motion, in a little space ;— unlike the musterdrum, which is continually referred to on account of fa-miliar illustration, the sticks of this are fixed on the inside,and though no hands are there to beat them on the head,they are connected to little cords, which jerk them downwith a sort of conscious independence, whenever there isthe least noise abroad, to give the brain intelligence, as itwere, of what is going on without.* Fig. 76. H>fr 4 Explanation of Fig. this drawing the little bones are representedof their natural siz
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Keywords: ., bookcentury1800, bookdecade1830, booksubjectanatomy, bookyear1834
