42; 



NOTES. 



The Microscopes of Powell, Ross, and Smith. 

 By Edward M. Nelson. 



II. — ANDREW ROSS'S MICROSCOPE?. 



The name of Andrew Boss first appears in the Transactions of the 

 Society of Arts,* in connection with a Microscope he made in March 

 1831, for Mr. W. Valentine of Nottingham. At this time Mr. Boss's 

 address was 5 Albemarle Street, St. John's Square, Clerkenwell ; 

 and it is probable that he was a philosophical instrument maker to the 



Fig. 101. 



* Vol. xlviii. p. 413(1832). 



