. [Official program and souvenir of the congress . And what it does not do It does not scratch or cut. The chalk we use is of our ownmanufacture, rigidly tested chemically and commercial chalk that we could purchase was free frominsoluble and crystalline matter. No absurd medicinal claims are made. Its slight alkaline re-action and its mild antisepsis are as close as a dentifrice shouldcome to medication. Where a medicament is necessary, treat-ment ought to be strictly a matter of professional direction. For those of the profession wlio prefer a dentifrice inpowder form—Colg


. [Official program and souvenir of the congress . And what it does not do It does not scratch or cut. The chalk we use is of our ownmanufacture, rigidly tested chemically and commercial chalk that we could purchase was free frominsoluble and crystalline matter. No absurd medicinal claims are made. Its slight alkaline re-action and its mild antisepsis are as close as a dentifrice shouldcome to medication. Where a medicament is necessary, treat-ment ought to be strictly a matter of professional direction. For those of the profession wlio prefer a dentifrice inpowder form—Colgates Antiseptic Dental Powder isequally to be coinmended. Rince Bouche is a most re-freshing mouth wash. Our booklet. Architects of .American Dentistry, is of interestto both the profession and the public. It should be on yourreception room table for patients to read. .A. complimentarycopy may be obtained at the Colgate Booth or on request to COLGATE & COMPANY, 199 Fulton St., New York City Established 1806. 14g TheTeter Gas-Oxygen Apparatus The Teter regulated-pressure apparatus is the invention of an anesthetistwho has devoted all his life to the developing of this form of anesthetic. Regulators are built inthe head of the apparatus,which reduce the highpressures of the gases andpermit them to pass to thepatient in a gentle, even,steady flow at all times. The controlling valvesare so arranged that anincreased quantity of onegas may be given withoutinterfering with the quan-tity flow of the other. By heating the gaseswith our vapor warmer(either alcohol or electric),much less gas is gases always pro-duce a deeper and moretranquil anesthesia and atthe same time eliminate allthe irritating effects whichusually follow the use ofcold gases. In ANALGESIC workno assistant is necessary,because the apparatus runsas it is you wish the best results at the lowest cost, buy a for cafalos^uc and literature. THE TETER MANUFACTURING COMPANY Manufacturers of ga


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