ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 
493 
Camera Drawing.* — Mr. G. F. Andrews devised a method of camera 
drawing which proved invaluable for recording delicate appearances. 
Instead of white drawing paper, he used dark shades of thin dull surface 
tinted papers, varying the shade and hue according to the amount of 
light, on the brightest days using black. The point of the pencil was 
whitened with Chinese white. This device obviated the necessity for 
using smoked glasses in the camera. There was a notable gain in light 
and definition. Various coloured crayons to differentiate optical planes 
or cell-series were used, and sometimes a brass or an ivory point. 
* Zeitscbr. f. wiss. Mikr., xiv. (1898) pp. 451-2. 
