WATSON'S COLLEGE STAND. 



103 



the coarse-adjustment enables the working distance of 

 objectives to be measured and compared. 



Watson's Medical or College Microscope (fig. 57) i s 

 an economical form of instrument, having a sliding 

 body for coarse- adjustment, fine-adjustment, draw-tube*, 

 wheel of diaphragms, tube -fitting for under-stage appa- 

 ratus, plane and concave mirrors, with one eye-piece, 



FIG. 57. Watson's Medical or College Microscope. 



J-inch and 1-inch objectives, and stand condenser. It 

 is well adapted for class or laboratory use. The maker 

 strongly recommends it for the use of the brewer, and 

 amateur, as a cheap and useful instrument. 



Mr. Pillischer (New Bond Street) is favourably 

 known for the excellency of his instruments. His 

 No. 1 Microscope (fig. 58) is of good workmanship, and 



