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NEGEETTI AND ZAMBRA, HOLBOEN VIADUCT, E.G., 



894 



FIG. 894, FIG. 895*. 



ACHROMATIC MICROSCOPES. 



Achromatic Microscope, with Jointed Pillar, and firm circular foot, Hackwork 

 adjustment to the body, sliding clamp for objects on the stage, with a set 

 of Achromatic lenses, brass forceps, &c. ; in Mahogany case (fig, 894) 



In three sizes, 1 10 220 330 



895 



895 



896 



Negretti and Zambra's No. 1 Microscope (suited for elementary instruction 

 or amusement). Bronzed Stand, rack adjustment to the body, slide holder 

 and diaphragm to the stage, forceps, stand condenser, two eye-pieces, and 

 two sets of Achromatic Powers, in Mahogany cabinet . . 3 10 



Negretti and Zambra's No. 2 Microscope, similar to No. 1, with Fine 

 Adjustment to the body, and 1-inch and|-inch Achromatic Powers 



(fig. 895*) 4 10 



Negretti and Zambra's No. 3 Microscope, similar to No. 2, and fitted with 

 Polarising Apparatus 6 10 



897 Negretti and Zambra's No. 1A College Microscope, with Brass stand, 



rackwork adjustment to the body, sliding object stage and holder, 

 diaphragm plate, Achromatic object lens, dividing to ^-inch and ^-inch, 

 in brass box, Live Box, brass forceps, &c. ; in Mahogany cabinet with 

 lock and key and drawer (Fig. No. 1A), 3 10 



898 Ditto Ditto Ditto, with Stand Condenser, Stage, Forceps .440 



