S. L. STRAKER respectfully informs the Public that he would be 

 happy to supply Priced Lists of the Mieioswpes and Microscopic 

 Apparatus, invented by Mr. Pritchard ; also Coloured Impressions 

 of the Plates of the Work, entitled — "A History of Infusorial 

 Animalcules, living and fossil." 



Pritchard^ 8 Optical Instrument 



and Spectacle Manufactory, 



162, Fleet Street, London. 



