United States. Surgeon-General's Office, American Roentgen Ray Society · New York : Middleditch · leaf 207
<*5 lit w Fig. 3. Position for first exposure. … Fig. 4. Position for second exposure.200 HEAD EXAMINATIONS 201 moved from the front plane of the cornea, and it shouldalso be borne in mind that the front of the cornea is 10millimeters in front of the shadow of the indicator-ball, asshown in your negatives. The tube is now centered overthe…
