72 



NOTE ON SOME PORTABLE MICROSCOPES. 



Mr. H. Crouch makes a small fokling Microscope, fitting into 

 a leather case 7 x 5 x 3^ in. 



Price with a §-in. and |^-in. objectives and 2 eyepieces, £7 7s. 



Messrs. Swift & Son's Improved Clinical Microscope (Figs. 4, 5) 

 was also specially designed for bacteriologists attached to one 

 or other of the services, whose duties in this connection often take 

 them to remote districts, when a very compact equipment becomes 

 an absolute necessity. As will be seen from the figures this is 

 attainable to a remarkable degree by the open form given to the 

 back leg of the tripod, and by the folding stage. It is furnished 



Fig. 5. 



with rack coarse, and a special form of fine adjustment to work 

 with any high magnification, while the outer body can be with- 

 drawn sufiiciently far to take a 5-in. objective if required. With 

 draw-tube fully extended the body length is 8 in. or 200 mm. 

 The eyepiece gauge is R.M.S. No. 2, viz., 1-04 in. = 26-416 mm. 

 The other dimensions are as follows : — 



'TI7 



6 in. 



in. 



