DR. BIGELOW:—Mr. President and gentlemen: I have never used any of the porcelain fillings myself, but several cases have come under my observation, and the greatest objection that occurred to me, at least in those cases, was the well-defined line of demarkation between the filling and the tooth itself; not but what the porcelain was good color, but it was the material it was set in. A gentleman once opened his mouth and showed me his teeth, and spoke of the great pleasure and comfort that he had taken since his teeth were filled in that way. The porcelain fillings were made for him by a dentist in New York City. To me they were very much more unsightly than gold, possibly because the material used in setting them was not a good match in color for the natural teeth. I think I may have seen one of the cases that Dr. Stoddard has spoken of in his paper. So far as the porcelain itself was concerned, it was a very good match for the tooth, but the line of demarkation was very distinct, almost as much so as if gold was used, though perhaps the strength would be greater. I don't know, perhaps Dr. Stoddard manufactures his own cements and gets his shades just right, thereby overcoming this objection. DR. TAFT:—There is one other place, Mr. President, where it seems to me these porcelain tips or fillings may not be always practicable that may be illustrated by a case in hand: namely, that of a patient whose upper incisors upon examination were found to be filled with fine fractures, extending along the surface of enamel from the biting edge well up towards the margin of the gums. In the left superior central I found what seemed at first to be a very small proximal cavity, and started very carefully to excavate it from the palatal side, when the corner of the tooth soon afterwards chipped off, and in still further excavating,—hoping to fill with gold,—it continued, in a most aggravating manner, to chip away more and more. To get the smallest possible undercut or groove to retain the gold seemed an utter impossibility, and the longer and more carefully I worked, the more discouraging it became, until finally I was obliged to give up altogether the attempt to fill the tooth with gold and to replace the broken corner with oxyphosphate cement. Now, here would have been an excellent opportunity for a porcelain tip, provided a man had the requisite skill to get sufficient anchorage for it without experiencing the same difficulty that I encountered in attempting to make a gold filling. I should like to ask Dr. Stoddard what his own experience has been with this class of teeth: if it is possible to adapt porcelain tips in such cases, and if so, how long they would be likely to remain. They are the most discouraging sort of teeth, I think, we have to deal with, but fortunately, cases as bad as the one just cited do not confront us very often.