. Elementary and dental radiography / by Howard Riley Raper . 140 DENTAL RADIOGRAPHY. READING RADIOGRAPHS 141 graphed, and then the negative placed in the printing frame with thesensitive side up (this must be done, or there will be a loss of detail)when observing prints, it is as though one looked at the part from theposition of the film or plate during exposure. When observing half-tones made from photographic prints it is thesame as when observing the prints themselves, unless special steps havebeen taken in the process of making the half-tones to reverse the was done in Fig. 124.

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. Elementary and dental radiography / by Howard Riley Raper . 140 DENTAL RADIOGRAPHY. READING RADIOGRAPHS 141 graphed, and then the negative placed in the printing frame with thesensitive side up (this must be done, or there will be a loss of detail)when observing prints, it is as though one looked at the part from theposition of the film or plate during exposure. When observing half-tones made from photographic prints it is thesame as when observing the prints themselves, unless special steps havebeen taken in the process of making the half-tones to reverse the was done in Fig. 124. When observing half-tones made from negn-tives it is the same as observing negatives from the film side. When looking at radiographs made directly on paper, it is as thoughyou observed the part from the position of the tube during exposure. How to mark negatives is a subject that has marking caused the use of a great deal of perfectly good paper negatives. and ink. After trying several methods, I no longer attempt to mark my negatives, but place them in envelopes and mark the env

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