Another thing, Mr. President, when a pulp is destroyed by an oxyphosphate filling it makes one of the dirtiest heaps of debris that I have met. It goes all to pieces and makes a very bad mess. I have used oxychloride for capping and had better results than with the oxyphosphate. DR. BLAISDELL:—I would like to ask if Dr. Eddy has ever used oxysulphate? DR. EDDY:—I have not. DR. GILLETT:—I would like to hear more about this idea of oxyphosphate destroying the pulp. As I understand the gentleman, he makes the statement that he has ascribed the death of certain pulps to oxyphosphate used either as a lining, or as a filling in cases where there has been no exposure. Am I right? DR. EDDY:—Yes, sir. I had one to-day, Mr. President, that I can attribute to nothing but oxyphosphate. There was no exposure. DR. NILES:—Mr. President, I used to cap pulps, but I seldom perform that operation now. When I do, I feel that death will occur sooner or later. I never cap with oxyphosphate unless I wish death to take place. It has been said by one of the speakers to-night that the nerve has no means of absorbing dead matter, as the pulp has no absorbents. Even if it had, I should not want it to come in contact with the oxyphosphate. Phosphoric acid is an escharotic, and I don't know why a creamy mixture of it and the oxide should be flown over an exposed pulp, unless to destroy it. If a pulp stands this treatment and lives, it is tough. An acid that will etch glass, or dissolve silver, will destroy soft tissue. It seems to me out of reason to use such things on exposed pulps. Phosphates or chlorides mixed to the consistency of cream make an unstable, strongly acid compound, that when hard very soon dissolves in water, or to a large extent will become deteriorated in water or moisture. In my opinion, the best treatment to save a pulp, provided the patient is strong and robust enough to help out any treatment, is to relieve it from all irritation, disinfect it, and let nature take care of it. Any non-irritating mechanical means you can use to that end will be more beneficial than stimulating, bleeding, etc. I would not use strong carbolic acid or creosote to disinfect an exposed pulp, for they also destroy its surface, and the dead matter remaining decomposes and irritates the adjoining tissue. Sooner or later that pulp dies. The most of the patients who come to us with exposed pulps have a debilitated state of the system. It is not the best vitalized class of people, but those who are sickly and delicate, and who have not much reserve force for the body, to say nothing about the teeth. The question of conservative treatment, in a large majority of cases, with the hope of any lasting results, I shrink from. If I can painlessly treat my patient and take him past the trouble by destroying the pulp and filling the cavity and canal, I feel that I have done the best that can be done for him.