ZOOLOGY AND BOTANY, MICEOSCOP5T, ETC. 



355 



(4) Photomicrography. 



Koristka's Simplified Vertical Camera.* — This design (fig. 66) is 

 due to Professor Euffini of Siena, and its nature ^vill be easily under- 

 stood from the figure. A handle at the top, connected with an endless 

 screw, raises the frame with the focussing screen to a suitable distance. 

 The other end of the bellows is drawn over the ocular and clamped by a 

 screw. The framework can also be used for horizontal photomicro- 

 graphy. 







Fig. 06. 



Apparatus for Photographing with Light incident from above 

 and below.f — F. W. Muller has contrived some changes in the well- 

 known Zeiss apparatus, in order to be able to photograph the upper and 

 under sides of a solid or transparent object. The general arrangements 

 are shown in figs. 69 and 70, the former being for upper side and the 

 latter for under side photography. On the rectangular table which 



* F. Koristka's Catalogue, Milan, fig. 64, p. 76. 



t Zeitschr. f. wiss. Mikr., xix. (190-2) pp. 44-50 (7 figs.). 



