650 



SUMMARY OF CURRENT RESEARCHES RELATING TO 



Old Microscope by J. CufF. — This small portable Microscope (fig. 120) 

 signed J. Cuff. Londini, Inv. & Fee. N" f>l was probably made by Cuff 

 before 1750, fur Cuff was declared a bankrupt in November 1750, ac- 

 cording to the London Gazette of that date, but was still living in 1758 

 opposite Salisljury Court, Fleet Street, and in 1761 in Fleet Street oppo- 

 site Shoe Lane. The pillar is inclinable and mounted excentrically on 

 an oval base-plate capable of rotation, which gives greater stability to 

 the Microscope in different positions. It has a fine adjustment of the 

 John Marshall type for the lens-holder, and both lens-holder and the 

 stage can be folded up for portability. Two 1 trass holders attachable to 

 the stage are provided for holding the ivory and brass object-sliders. 



Fig. 120. 



In 1898 E. M. Nelson* described a very similar old Microscope 

 with a compound body. The present model differs from Nelson's in- 

 strument in the following points: the stage has no lateral movement ; 

 it has no clip to clamp the slide to the stage ; it has no compound body. 



In the Micrographia Illustrata, 1771. George Adams figures and 

 describes " The Single and Double Aquatic Microscope," which is very 

 similar to the present model with some slight differences. 



It appears probable also that the present model is the parent of 

 Ellis's Aquatic Microscope, for in the Introduction to Ellis's Essay on 

 the Corallines, 1755, p. viii. We find the author saying " Here we had 

 the opportunity of seeing these .... Corallines alive in sea-water by 



* See this Journal, 1898, p. 675. 



