45, CORNHILL, E.G., AND 122, EEGENT STEEET, W., LONDON. 



259 



No. 1 A 



No. 2 B 



899 Negretti and Zambra's No. 2B College Microscope, as 898, but with fine 



adjustment and lengthening tube to the body, separate object lenses, 1-inch 

 and -inch, in brass boxes ; in Mahogany Cabinet . . 500 



900 Negretti ] and Zambra's No. 30 College Microscope, with Mechanical 



Stage, giving adjustment in two directions, as No. 2 B, in Mahogany 

 Cabinet with Lock and Key & 10 



901 Negretti and Zambra's No. 4D College Achromatic 

 Microscope, similar to No. 3 C, but with Polarising 

 Apparatus ......... 



10 10 



902 Negretti and Zambra's College Achromatic Microscope, No. 5. Brass stand, 

 with Mechanical Stage, Rackwork Adjustment and Lengthening Tube, 

 to the body, Fine adjustment for the Object lens, rotating object 

 holder, and diaphragm to the stage, two eye-pieces, three Achromatic 

 Powers, 1 inch, ^-inch, and ^-inch, Polarising Apparatus with Selenite 

 Spotted Lens, Stand, Condensing Lens, Animalculse Cage, Stage Con- 

 denser and Forceps, Curved Forceps, Dipping Tubes, Stage Glasses, 

 &c., &c. ; in Mahogany Cabinet 18 18 



902 Negretti and Zambra's Student's Binocular Microscope, with convenient 

 adjustment for width of eyes, Plain Stage, two Eye -Pieces, and 1-inch 

 and |-inch Achromatic Object Lenses, Stand Condenser, Live Box, 

 brass forceps, &c. ; in Mahogany cabinet . . . . .880 



s2 



