The Dental cosmos . ter. Fromthe description of their habits, it is evident that their mode of lifeis on the whole healthful. Plenty of muscular exercise, plenty ofrest, quiet, cheerful dispositions, and a life not governed by conven-tionalities but in which natural impulses are allowed to sway conduct,are conducive to sound bodies. These large, well-developed jawsmay be partly due to race peculiarity ; but there is no doubt, when wecompare with these the unnatural position of the third molar in thejaws of many persons of the present generation, and notice the fre-quency of contracted arches,
The Dental cosmos . ter. Fromthe description of their habits, it is evident that their mode of lifeis on the whole healthful. Plenty of muscular exercise, plenty ofrest, quiet, cheerful dispositions, and a life not governed by conven-tionalities but in which natural impulses are allowed to sway conduct,are conducive to sound bodies. These large, well-developed jawsmay be partly due to race peculiarity ; but there is no doubt, when wecompare with these the unnatural position of the third molar in thejaws of many persons of the present generation, and notice the fre-quency of contracted arches, that the jaws are growing smaller, andthat the prevalence of nervous strain brings about these conditions. The illustrations are taken from the casts of the mouths of thecliff-dweller and his wife, and represent the average contour and sizeof the jaws of all examined. Figs. 1, 2, 3 show the denture of theman ; Figs. 4, 5, 6 exhibit that of his wife : JAWS AND TEETH OF A PARTY OF CAVE- AND CLIFF-DWELLERS. 363 Fig. Fig. 3.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectdentist, bookyear1890
