. The book of photography; practical, theoretical and applied. Fig. 728.—Zeisss Vertical axu Hokizontal Camera, etc. Typical Apparatus. The apparatus shown by Fig. 677, , is a high-class one suitable for anykind of work, the ilhuninant being anoxyhydrogen lamp ; the microscope isfixed with the tube in the horizontal 730). It is a conical box camera on fourlegs, and it has at one side a light-tightdoor which, when opened, allows of thedirect focussing of the object without dis-connecting the microscope. The Bauschand Lomb photomicrographic outfit, whichis readily clamped in either a horizo
. The book of photography; practical, theoretical and applied. Fig. 728.—Zeisss Vertical axu Hokizontal Camera, etc. Typical Apparatus. The apparatus shown by Fig. 677, , is a high-class one suitable for anykind of work, the ilhuninant being anoxyhydrogen lamp ; the microscope isfixed with the tube in the horizontal 730). It is a conical box camera on fourlegs, and it has at one side a light-tightdoor which, when opened, allows of thedirect focussing of the object without dis-connecting the microscope. The Bauschand Lomb photomicrographic outfit, whichis readily clamped in either a horizontal PHOTOMICIIOGHAPHY. 541 or a vertical position, is shown by Fig. 732 represents the very convenientvertical form of apparatus made byMessrs. R. and J. The Focussing Screens. Two focussing screens are usually em-ployed, a ground glass screen and a plainone. For the former the ordinary groundglass is too coarse. A finer screen mavbe made by rubbing together two plates
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectphotography, bookyear
