Fig. 27.—Camera Lucida
A great many different types of camera lucidas or [drawing apparatus] are obtainable, varying from simple-inexpensive to complex-expensive forms. Figs. 26, 27, and 28 show simple and complex forms.
Fig. 28.—Drawing Apparatus
MICROPHOTOGRAPHIC APPARATUS
The microphotographic apparatus (Fig. 29), as the name implies, is an apparatus constructed in such a manner that it may be attached to a microscope when we desire to photograph microscopic objects. It consists of a metal base and a polished metal pillar for holding the bellows, slide holder, ground-glass observation plate, and eye-piece. In making photographs, the small end of the bellows is attached to the ocular of the microscope, the focus adjusted, and the object or objects photographed. More uniform results are obtained in making such photographs if an artificial light of an unvarying candle-power is used.
Fig. 29.—Microphotographic Apparatus
There are obtainable more elaborate microphotographic apparatus than the one figured and described, but for most workers this one will prove highly satisfactory. It is possible, by inclining the tube of the microscope, to make good microphotographs with an ordinary plate camera. This is accomplished by removing the lens of the camera and attaching the bellows to the ocular, focusing, and photographing.