MCALLISTER & CO., 

 No, 48 Chestnut Street, Philadelphia, 



HAVE FOR SALE A VERT LARGE ASSORTMEXT OF 



COMPOUND MICROSCOPES. 



Neatly mounted in Brass, of a power ranging from 15 to 60 

 diameters, from $2 50 to $10 



An Achromatic Microscope, cylinder brass body, with rack-work 

 and condenser power fifty times. Price, $16 00 



Ditto, with power of 120 to 135 times, $22 and $23 



A still better Microscope, also Achromatic, to screw upon top of 

 the box, which makes it firmer large stage, rack-work, con- 

 denser, dissecting instruments, &c. power 120 times. Price, $26 00 



The same instrument, with extra Lenses, so as to increase the 

 power from 160 to 250 times. Price, $33 00 to $37 00 



The very best Achromatic Microscopes, with movable lever or 

 rack-work stage Microscope to be placed either vertical or 

 horizontal bull's eye condenser frog-plate, &c. ; cost from 



$150 to $650 



Sets of Achromatic Lenses, of various powers, separate from the 

 Microscopes, $4 50 to $9 00 per set. 



Eye-pieces, of various powers, separate from the Microscopes, 



$2 25 to $3 00 each. 



Glass slips for Microscopic slides or preparations, 50 cts per doz. 



Glass dishes and covers for Microscopic slides, and wet prepara- 

 tions, $1 25 to $3 00 per doz. 



Thin glass for covering Microscopic objects. 



Microscopic sliders, in sets of 12, 24, and 36, of portions of in- 

 sects, sections of wood, guano, feathers, &c. Prices from 



$2 to $6 50 the set. 



Finely prepared objects, parts of insects, &c., 19 to 50 cents each. 

 " " " anatomical as injections, 75 cents each. 



Also, Magnifying Glasses, in horn cases, for the pocket; Micro- 

 scopes to examine the ear; Urinometers, Thermometers, Hydrometers, 

 Weighing Scales, Magnets, Mathematical Instruments, Spy-Glasses; 

 Camera Lucidas, Stanhope Lenses, &c. 



