BENJ. PIKE S, JR., PRICE CATALOGUE. 



45 



No. 



1017 Daguerreotype lenses, from $1.25 to $2.00 



1018 " achromatic, $2 to 8.00 



1019 Set of three lenses for compound microscope 



condenser, 1^ inch diameter, - 1 .25 



1020 Set of two lenses for solar microscope con- 



denser, 2 inch diameter, 1.12 



1021 " " " 2 " 1.37 



1022 " " " 3 " 2.00 



1023 " " for telescope, 6 ft. focus, 1.75 



1024 Camera obscura lenses, 25cts. ; and larger, to 1.50 



1025 Fig. 692, model of double convex lens with 



converging rays, -. - 1.00 



1026 Fig. 693, model of plano-convex lens with 



converging rays, - 1.00 



MIRRORS. 



OPTICAL INSTRUMENTS. 



1041 Fig. 694, model of the eye, 



1042 Fig, 695, image on the retina, 



5.00 

 2.50 



