WARINGTON'S MICROSCOPE-STAND. 67 



Messrs. Powell and Lealand's microscopes are sold at 

 prices suitable to the wants and means of most persons ; 

 their No. 1, such as we have represented, but without 

 object-glass, can be purchased for 221. A smaller instru- 

 ment, fit for the student, with f inch of motion to the 

 stage by means of a lever, coarse and fine adjustments to 

 body, plane and concave mirrors, revolving diaphragm, 

 Lister's dark-wells, and two eye-pieces, SI. 



We wish to call attention to the movement made by 

 the Society of Arts, with the object of supplying the 

 public, at low prices, with approved and warranted micro- 

 scopes. The Society offered prizes to all manufacturers 

 for the best simple microscope, to be called a School 

 Microscope, and to be sold at 10$. 6d. ; and for the best 

 compound microscope, to be called the Student's Micro- 

 scope, and to be sold at 31. 85. Both prizes were awarded 

 to Messrs. Field and Son, of Birmingham. 



Whilst alluding to cheap microscopes, we would men- 

 tion Warington's Travelling Microscope, made by W. J. 

 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 viewing objects in aquaria, and under other cir- 

 cumstances where any ordinary form of instrument could 

 not be made available. It is altogether a useful student's 

 microscope, besides having the recommendation of folding 

 up into a smaller compass than any instrument of its size, 

 and of not being liable to much injury from chemical or 

 marine investigations. For 31. this microscope is furnished 



Fig. 40. Warington's Microscope packed. 



complete, with one eye-piece, quite sufficient for all ordi- 

 nary investigations. 



Fig. 39 is a representation of Warington's microscope, 



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