Sheppard : Early Microscopes. 



233 



T — A cone to screw into the centre of the stage to intercept 



some of the rays from R. 

 U — A brush. 



V — A glass tube for living objects. 

 W — A cell containing a concave and a plain glass to confine 



fleas, lice, mites, etc. 

 X — A plain circular glass. 



Fig-. 5- 



' The Double Microscope ' (from Micrographia illustrata, 1746). 



Y — A long steel wire forceps which fits into the slot on the 



stage. 

 Z — A white round ivory box to hold talcs for the sliders. 



The instrument given by Mr. Sherborn is a slight modifica- 

 tion of the above, and is intermediate between it and the one 

 described as ' Culpepper's Microscope ' by Kanmacher in his 

 second edition of Geo. Adams' ' Essays on the Microscope,' 

 1798, pi. IV. This latter picture shows the ivory box Z 



1912 Aug. I. 



