s cylinder should fit over the end of the inch board is prepared to fit the grooves and slide its magnification is very much less than that of the objective lens and reach nearly down to the stage. By sting. freely up and down. This board may be clamped in using this cylinder the brilliancy of the… … can be pushed in from the end and should Fig. 2.—TRANSVERSE SECTION OF BLACKBERRY WOOD. fit it well or be tightened in place by little The amateur is sometimes advised to use only the wooden wedges. Of course the upper surface of the Screw. The lens of the camera is removed and a objective lens in…
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