THE MICROSCOPES OF 1894. 



329 



head attached to a rod, which acts on two screw-heads, or rather 

 two endless screws, turning the wheels in question. The move- 

 ment in this direction is over i^ inches. The longitudinal move- 

 ment is by a screw, which runs in grooves on the outer 

 edge of the main stage. We believe that Messrs. Swift have 

 since placed the milled heads of the two movements on the 

 same side, so that an observer needs only to use one hand to the 

 stage, leaving him free to use "his other hand to manipulate the 

 adjustments. They have also further improved this stage by 

 placing the two wheels closer together, thus giving a wider trans- 

 verse motion — ?>., two inches. 



Messrs. Ross & Co/s Eclipse Microscope. 

 When a simple idea is brought forward, we often feel inclined 

 to kick ourselves for not having thought of it before. Messrs. 

 Ross and Co.'s form of stand with the ring foot is a case in point. 

 It can be seen at a glance how steady this form of stand is, the 

 wonder being that it has not been thought of previously. But, 

 however, better late than never. 



Fig- 5- 



Fig. 6. 



International Journal of Microscopy and Natural Science. 

 Third Series. Vol. V. 



