538 



NEGRETTI AND ZAMBRA, HOLBORN VIADUCT, E.G., 



3229 



3230 



3231 



3232 

 3233 



3234 



3235 



FIG. 3231. 



FIG. 3234*. 



LAMPS FOR DARK ROOM. 



Bunsen's Gas Burners, for boiling or distilling; Gas 

 Jets, with flexible tube, metal chimney, and gauze 

 wire, for burning without smoke, various forms, 

 see ante, page 403. 



Lanterns furnished with Coloured Glass Shades, for use 

 in dark room (fig. 3230) 



Improved form of Photographic Non-Actinic Lamp, 

 where the yellow or ruby glass can be raised or 

 depressed (fig. 3231) 



Studio Lamp with safety Spirit chamber 



Patent Lamp for the Magnesium Light 



LEVELLING STANDS, TRIANGULAR PATTERN. 



With adjusting screws, for levelling plates with Albumen, and 

 Developing and Fixing Collodion Pictures (figs. 3234) : 



For plates up to 5 by 5 inches 



Ditto ditto 7 by 6 



Ditto ditto 9 by 7 



Ditto ditto 12 by 10 (fig. 3234*) . 



Filter Supports (fig. 3235), plain form .... 



FIG. 3235. 



Each. 

 s. 



046 



10 6 

 12 6 

 330 



030 

 046 

 056 

 10 6 

 026 



FIG. 3237J. 



FIG. 3237-f. 



FIG. 3237 s 



FIG. 3237. 



