annot examine here, changes the handle wholly below the buffers during the coupling its form and produces greater or less deviations in the direc- operation instead of resting it upon the buffers, as shown in tions of the pencils of luminous rays that enter the eye. the last mentioned figure.… … ratus. The apparatus is con- pivoted so that the breech may DR. CUSCO’S LENS WITH VARIABLE FOCUS, nected with a siphon pressure be swung upward to permit gauge, filled with water or mer- insertion of a cap or cartridge. cury. If the pressure gauge indicates zero the pressure in the apparatus and…
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