MICROSCOPES OF AMERICAN MARK. 



707 



vented an admirable Student's Microscope, which commends 

 itself to all who desire efficiency, cheapness, and portability. 

 The accompanying cut explains its appearance and mode of action. 

 It is mounted on a tripod base, with uprights of japanned cast 

 iron. It has a quick and a slow movement, with draw-tube and 

 a stage 3 by 4 inches, movable by a lever. This movement the 

 Messrs. Q. have nearly perfected, and at the suggestion of Dr. 

 Goddard, of this city, an eminent microscopist, they have so 

 arranged it that the stage follows the hand instead of taking the 

 opposite direction, as is usually the case in other instruments 

 having the lever stage. (Fig. 428.) 



Fig. 4Q8. 



J. & W. Grunow's Student's Microscope. 



Messrs. Grunow have also improved their stand in the mode 

 of adaptation of accessory apparatus, especially of that which is 

 attached below the stage; this is held in place by a bayonet 



