122 



A. C. BANFIELD ON STEREO-PHOTOMICROGRAPHY. 



I should like to add, however, that this piece of apparatus 

 can be used only on microscopes with a large body-tube ; but if any 

 photographically inclined member has a half-plate camera and 



his microscope fitted with Zeiss sliding objective-changers, he has 

 all that is necessary for doing high-power stereoscopic work, as the 

 lateral screw with which these changers are fitted is a very 

 efficient means of moving the objective the necessary amount. 



Jour (I. Q^uckttt Microsco'picaL Club, Ser. 2, Vol. XL, Ao. C7, Hoi-emLer 1910. 



