ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 



fi 19 



catalogue* of the Leitz firm. It is shown in figs. 113-115. 



Fig. 



114 



shows the arrangement for vertical work. The base-frame rests on four 

 feet, two of which are fitted with screws. A large foot-plate with push- 

 movement on the two rails of the base carries the Microscope, and can 

 be clamped when in position. A small bench is connected with the 

 foot-plate, and carries an adjustable lens and a lamp with ground-glass 

 disc. The camera is supported by pillars, and can be clamped at any 

 desired height and inclination. 



Fig. 114. 



Fig. 113 shows the arrangement for horizontal work. In this position 

 the maximum bellows extension can be attained — up to 500 mm. — with 

 the help of a push-arrangement, on both ends of which the carrier of the 

 camera collar can be clamped. A gearing is affixed to the large foot- 

 plate for controlling the fine adjustment of the Microscope, by means of 

 a cord operated by a pliable rod. For photographing transparent pre- 

 parations up to 100 mm. diameter, with weak magnification, a small 

 erect stage with diaphragms (fig. 115) can be clamped on to two sides 

 of the large foot-plate so that it is at right angles to the camera axis. 



* Catalogue No. 41 (1905) pp. 86-8. 



