. A Reference handbook of the medical sciences : embracing the entire range of scientific and practical medicine and allied science. ngleness is sogradual, and finally so nearly complete, as to suggest theidea of a beinf>; whose bilateral halves may have been de-rived from two primi-tive embryonic traces,which had been devel-oped in a single vitcl-lus, but, in conse-quence of their closeproximity and perfectparallelism, were fusedon a median axis, sosymmetrically as toresult in a single two faces aregenerally symmetrical•in relation to eachother. In some cases, however, the two fac
. A Reference handbook of the medical sciences : embracing the entire range of scientific and practical medicine and allied science. ngleness is sogradual, and finally so nearly complete, as to suggest theidea of a beinf>; whose bilateral halves may have been de-rived from two primi-tive embryonic traces,which had been devel-oped in a single vitcl-lus, but, in conse-quence of their closeproximity and perfectparallelism, were fusedon a median axis, sosymmetrically as toresult in a single two faces aregenerally symmetrical•in relation to eachother. In some cases, however, the two faces do notexhibit bilateral symmetry in relation to the axis offusion, one face being perfect, while the other is more orless defective (Heteroprosopus, of Gurlt). In some instances the facial axes are nearly or quiteparallel; in other examples they are divergent at variousangles above, as seen in Fig. 3860 ; while in a third classof cases they diverge at a more or less acute angle below,as seen in Fig. 3861. The angles of the antero-posteriorplanes also vary in their relations to each other in differ-ent cases of Fig. .iSliO.—Diprosopus )3J (Sommer-
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectmedicine, bookyear188
