106 THE MICROSCOPE. 



oil-lamp is likewise attached ; and a stem proceeding from 

 the lower edge of the bell-mouth carries any desired form 

 of condensing or illuminating apparatus. This stand is 

 capable of being freely handed round a large class without 

 the focus becoming at all deranged, even when a very deep 

 objective is employed. This instrument is manufactured 

 by Mr. S. Highley. 1 



Fig. 60. Warington's Universal Microscope. 



While alluding to cheap microscopes, we would men- 

 tion Warington's Travelling Microscope, made by Salmon, 

 100, Fenchurch Street. It has a simple, firm, wooden 

 stand, whereby the cost is greatly diminished ; and an 

 arrangement of its parts which enables it to be used for 



(1) A very simple instrument, contrived by Mr. T. C. Archer for the purpose 

 or being used either as a lecture-room or as an ordinary table microscope, is 

 manufactured by Messrs. Parkes of Birmingham, and sold, with a set of achro- 

 matic powers, for 2J. 5*. in case complete 



