PREPARATIONS
AND APPLIANCES
139
•courageous manner. During winter months, undoubtedly, a very xeal perplexity arises from our climatic conditions. Arrangements nmst be made for the speedy drying of clothes and foot-wear. All ingenious and useful form of HOT AIR BOOT-DRYER1 has recently been introduced, and is here illustrated, which will be of service not only in ordinary domestic service, but for use in schools, sanatoria, and similar institutions. The appliance provides for the slow drying of wet boots by the supply of a well-regulated current of hot air into the boots. By this means scorching and:shrivelling o f the leather is avoided, thol-ough drying is insured, the boots are given a longer life and kept in good condition, labour is lessened and .a saving made in blacking and polishes.
A HYGIENIC DENTIFRICE. A new dental preparation, KOLYNOS,has been brought to our :notice. 2 The formula, which is that of Dr. N. S. Jenkins, has been ,submitted to us, and appears in every way admirable: soap and precipitated chalk are the principal ingredients, with various antiseptics. The preparation is put up in convenient collapsible tubes, and is not only particularly pleasant to use, but thoroughly effective in preserving the teeth and gums in good condition. Kolynos is the ,most elegant and attractive dentifrice with which we are acquainted. 1 The Hot Air Boot-Dryer is manufactured by Messrs. Fisher and Ludlow, Ltd., .Albion Works. Birmingham, at prices varying from ~Yi i5s. to ~Y44s. Supplied by Kolynos, Incorporated, 4, Farringdon Avenue, London, E.C., at xs. a tube.