. The microscope and its revelations. FIG. 137 (18!)Hj. in. FIG. i:;s (1898 . t is most desirable thai I],, piniom «l<nn!,l !„\ith the movements of the stage, and the mill,-,! not movablecarrying the /.-• as near t >,,,•/, „//,,•</• «« /,oxx/7/A-. The bestTurivlls. devised iii ls::-J. where one (a, screw) isother (a pinion) passes through it ; this permits bothal the same time \\ith one hand, giving a diagonal THE MECHANICAL STAGE. HOW TO FOCUS 177 motion, as well as the separate rectangular ones, and gives greatfacility for instantly producing any motion required without remov-ing th
. The microscope and its revelations. FIG. 137 (18!)Hj. in. FIG. i:;s (1898 . t is most desirable thai I],, piniom «l<nn!,l !„\ith the movements of the stage, and the mill,-,! not movablecarrying the /.-• as near t >,,,•/, „//,,•</• «« /,oxx/7/A-. The bestTurivlls. devised iii ls::-J. where one (a, screw) isother (a pinion) passes through it ; this permits bothal the same time \\ith one hand, giving a diagonal THE MECHANICAL STAGE. HOW TO FOCUS 177 motion, as well as the separate rectangular ones, and gives greatfacility for instantly producing any motion required without remov-ing the hand from its position; a most desirable attribute of a stagewhen the rapid movements of a living and minute organism arebeing followed. It still further enhances such a stage if a pinion is carried rightthrough the stage with a milled head at each end. A new stage devised by Watson has in it some features of interest,a principal one being that the milled head controlling the horizontalmovements is in a fixed position ; in other w
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectmicrosc, bookyear1901
