An old lady asking her doctor about 'Violet Ray', referring to ultra violet rays. Reproduction of a drawing after H.M. Brock, 1925.
- Brock, H. M. 1875-1960.
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About this work
Dialogue includes: Dear old lady. "Now tell me, doctor, who is this Violet Ray I hear so much about?"
1 photomechanical reproduction ; border 12.5 x 18 cm
Wellcome Library no. 15453i