OF OPTICAL INSTRUMENTS. 



1L5 



FIG. 1245. 



1245. Improved Microscopic Lamp (fg. 1245). In this arrangement, utility and 

 convenience are combined to the utmost ; a clear and brilliant light is obtained 

 and may be subdued, altered in tint, etc., and brought to bear upon any point 

 with the greatest facility, with silvered glass reflector for condenser illumina- 

 tion, porcelain non-conducting lamp shade, circle of blue glass to neutralize 

 the artificial rays, 2 2s. ; or without case . . . 1 15 



If with papier machie shade, 3s. 6d. extra. 



APPARATUS FOR COMPOUND MICROSCOPES, 



1246. LAEGE SIZED A and B EYE-PIECES, engraved, each . . 14 6 



1247. 

 1248. 

 1249. 

 1250. 



1252. SMALLEE SIZES . ' . . ' . . 



1253. Keliier's Orthoscopic Achromatic Eye-pieces, A and B 



1254. C 



1255. D 



1256. ADJUSTABLE DIAPHEAGM, adapted to A and B eye-pieces 



1257. POINTEB, adapted to A or B eye-piece . 



1258. CENTEEING GLASS ..... 



1259. EEECTING GLASS ' .' .' 



1260. HAELET SHADES TO EYE-PIECES, the pair 



1262. DOUBLE NOSE-PIECES, 12s., 14s. 6d., 1, 1 4s., 1 10s., and 



I 2 



