Cleveland, Ohio, Sept. 22, 1907.
To the Editor:
—Replying to the letter of Dr. J. E. Tuckerman in The Journal, September 21, page 1042: To give in full the reasons why we believe that the pictures shown in our article on Plastic Radiography (The Journal, August 31, page 751), are reproductions of the actual impressions made by the x-light from the use of two tubes on the negative plate would take more space than we are here allotted. We have ourselves once held the same views about it being only a "fake," as does Dr. Tuckerman, but several months' work convinced us that if we did not get a good plastic negative in the first place no amount of "out of register" or other "dodging" could produce a good plastic.These plastic radiographs are not only "pretty and artistic pictures," but they are correct down to the finest details. Reliefs