BENJ. PIKE, JR., 



294 BROADWAY, NEW YORK, 



MANUFACTURER AND IMPORTER OF 



Mathematical, Optical, and Philosophical Instruments, 



CASES OF MATHEMATICAL INSTRUMENTS, in every variety of 

 style and finish ; also Dividers, Drawing Pens, Bow Pen 

 and Pencils, Protractors, Scales, &c. ; Surveyors' Com- 

 passes, Chains, Theodolites, and Levels. Pocket, Sea, 

 Military, and fine Astronomical Telescopes. 



SPECTACLES, GOGGLES, EYE AND OPERA GLASSES, 

 In every Variety of Style and Mounting. 



FLOWER MICROSCOPES, BAROMETERS, 



INSECT MICROSCOPES, THERMOMETERS, 



COMPOUND MICROSCOPES, RAIN GAUGES, 



FINE ACHROMATIC MICROSCOPES, HYGROMETERS, 



COSMORAMAS, SACAROMETERS, 



CAMERA OBSCURAS, HYDROMETERS, 



MAGIC LANTERNS AND SLIDERS, LACTOMETERS. 



PHILOSOPHICAL APPARATUS, 



SUITED TO SCHOOLS, ACADEMIES, AND COLLEGES: 



Globes, Planetariums, Telluriums, Mechanical Powers, 

 Whirling Tables, Atwood's Machines, Air-Pump and 

 Apparatus ; Electrical, Galvanic, Magnetic, and Electro- 

 Magnetic Apparatus, in every variety ; Hydrostatic In- 

 struments, <fec. 



CHEMICAL APPARATUS: 



Retorts, Receivers, Bell Glasses, Crucibles, Evaporating 

 Dishes, Mortars, Furnaces, Gas Holders, Gas Bags, 

 Flexible Tubes, Glass Tubes, Assay Glasses. Gradu- 

 ated Measures. Bell Glasses and Tubes. Stop Cocks, 

 Unions, Cement, &c. <fec. 



