Walsh, David · London : Baillière, Tindall and Cox · leaf 104
the surface of thelung, there would be a better chance of finding its exact positionthan if it were more deeply embedded. In investigating thebrain, the photographic field is somewhat obscured, as the rayspass through a large mass of soft material and two surfaces ofbone, of varying thickness and… … Fig. 37. Let sk. represent the skull; /. b. the foreign body; No. I. thelamp, and A the sensitive plate used for the first position; No. II.the lamp, and B the plate for the second position. Then theshadow Al will fix the plane between No. I. and A in which/, b.lies. The exact point of/, b. on that…
X-rays · Radiography
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