Hygiene Of The Teeth

crust is the best dentifnoe. I never could get myself to btlieve in the natural necessity of a tooth brush. The African nations, the Hindoos, the natived of Southern Europe, the South Sea Islandeis, the Arabs, the South American vegetarians, in short, threofourths of' our fellowmen, besides our next relatives, the frugivoroua j mals, have splendid testh without sozodout. I really belitve that our3 decay trom shoer dieuse; the boarding. house homo lives chierly on pap - wants all his meats soft boiled, ana growls at cojd biscuit or an underdoue potato; in other words, he delegates to the cook the proper functions of his teeth. We hear occasionally of old men getting a second, or rather a third setof toeth. I met oue of them in Northern Guatemala, aud ascertained that he had become toothless during a twelve years' sojourn iu a seapoit town, and that he got his new set. upon his return to, his Dative vil lage, whereciyciiuiíi&noes obliged him lo resume the hard, corn cate diet of hls bojhood years. His teeth had reappeared as soon as their services were j called for, and would probsibJy never have absented Uiemselves if a papdiet haü uot made them superfluous. An artificial dentifrice will certainly keep the teeth white, but that does not prevent their premature decay; disuse gradually softeus their substauee, till one fiae day the haah eater snaps his best. incisor upon aa unexpected piece of bone. Svery old dentist knows hundreds of city customers whom the daily use of a toothbrush did not save from the neeesaity of applying. before tbo end of the fortieth year fcr a complete "celluloid set." I do not say that a soft toothbrush and ach dentifricea as oatmeal or burued arrow-root caá do any barra, but, for aanUary purposes, such precautions must be supplemented by dental exereise. Let a child invigorate its teeth by chewing a hard crus$. Children, and whole trihia of the northern races seora to t'eei an instinctive clesire to exereise their teeth upon some solid substance, ;s pet squirrels will gnaw the iuvniture if you give thera jïut-kemeis instead of nuts. Tae school-boy habit of gnawing pen-holders, finger-naih. eta, may have a similar significaree. Our practice of sipping iée-cold and steaniing hot dricks, turnabout, has alsoa very injurious eiFeot upon the 'orittle substance that forms the enamel of our t-eetb; no porcelain glaze would stand such abuse for any length of time, and experience has taught hunters and dog-fauciers that it destïojei even the bone crushiug ikngs of the animal from which our canine teeth derive their