THE STUDENT'S MICROSCOPE. 



51 



plete, with lenses, for the small sum of 51. 15s., by Mr. Baker, 244 Hoi- 

 born, who likewise furnishes all the requisites for microscopical pur- 

 poses, with well-selected specimens of mounted objects, at a small cost. 

 In Messrs. Powell and Lealand's microscope, the body moves on a 

 triangular bar, having a bearing of three inches, which renders it very 

 steady. The coarse and fine adjustment are both carefully attended to ; 

 and the stage is large and convenient. On the same bar that the body 

 rests, moves the " achromatic condenser;" by such an arrangement it is 

 certain to move in the same line with the body, which is very essential. 



fig. ST. Baker's Student's Microscope. 



Their object-glasses are of the most faultless construction, and are pre- 

 ferred for pathological investigations. Messrs. Smith and Beck, Mr. 

 Salmon, and other makers, supply cheap and useful forms of instru- 

 ments. Mr. Warrington has had constructed a very portable and eco- 

 nomical microscope, adapted either for the examination of objects in a 

 vivarium, or for dissecting purposes. It is packed in a neat case ; and 



