296 HINTS ON SUMMER BATHING. 



unfavorably; first, because creosote is certain to produce decomposition, 

 Avhicli is certain to find the easiest way out — through the alveolar. 



Secondly, because it is a mechanical imj^ossibility, in a majority of cases, 

 to fill pulp canals perfectly with gold or any similar material. 



Similar or worse failures occur with operators who use oxy-chloride of 

 zinc, or similar cements. Many use the zinc for capping exposed pulps. 

 If they will carefully observe they will see that the acid will disintegrate 

 and destroy membrane, fleshy fibre, dentine, etc. Used as a capping decom- 

 position of the pulp with all the attending evils, is as sure to follow as 

 sparks to fly upward. As a filling for roots I have no faith in any of these 

 " concretes, " from the simple fact that in thousands of cases that have come 

 under my observation, I have never seen a pulp canal made perfectly im- 

 pervious by their use. 



In a series of expertments in connection with a proficient chemist, I was 

 incidentally led to try a compound ofparafiine and caoutchouc for filling- 

 pulp cavities. Being readily applicable, and so superior to any metals or 

 pastes then in use, it was presented to the Dental Colleges and Societies 

 and pronounced perfect. 



In 1866 I adopted the use of a compound of paraffine, gutta jDercba and 

 feldspar — equal quantities. Thispreparatiouj when cool, is sufliciently hard 

 for temporary fillings in surface cavities; is as easily worked as wax, and is 

 perfectly insoluble, except by chloroform, ether and naphtha. Being ap- 

 plied in a semi-plastic condition, it fills every portion of the canal readily, 

 and forms a cement that renders the walls perfectly impervious to moisture 

 or gas. 



I have used one or the other of these compounds for twenty years, and 

 never failed to permanently preserve all teeth that I previously diagnosed 

 susceptible of being restored. 



After thoroughly testing this preparation and modus operandi, several 

 proficient members of the profession have adopted the motto : "jSf ever extract 

 a tooth while there is a root to build a top to, or a top to build a root to." 



HINTS FOR SUMMER BATHING. • 



Dr. W. H. Yail, M. D., well known as one of our best medical writers, 

 gives the following sensible suggestions on this subject in the ChristianUnion: 



As summer approaches, rules for bathing are apropos. Whether in bath- 

 tub, river or ocean, bathing should be accompanied only by pleasurable 

 sensations. The whole body should be kept aglow. If any shiverings or 

 chilly sensations are experienced, either you are not well, the water is not 

 of the right temperature, or you are bathing too long. At all events, such 

 feelings are nature's warning that you should at once leave the water and 

 give yourself a thorough rubbing with a coarse towel. Bathing, especially 

 swimming, necessitates great muscular activity, therefore in order that diges- 



