a BY EMILE GUARINI. of the hand that holds the apparatus. The operator The verant is an instrument designed for the mon- lens of shorter focus than that required by the rule just stops when the view appears with sharpness through- ocular examination of photographs obtained with ob- mentioned.… … to carefully manipulate the screen. This latter is so THE “ VERANT ” IN USE. Long and short sighted persons should, before using constructed as to assure the eye the desired position at the apparatus, remove the screen and introduce a cor- about an inch from the surface of the lens. It must…
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