272 



PARTICULARS 



OF A SET OF 



PHILOSOPHICAL APPARATUS 

 FOR $50. 



Fig. 117, five inch terrestrial globe, $1.25 ; Figs. 762 t6 

 773, set of twelve geometrical solids, $1.25 ; Fig. 761, 

 numeral frame, 88c. $3.38. 



Optics. Prism, 38c. ; Fig. 699, color blender, $1 ; ka- 

 leidoscope, 12c. ; multiplying glass, 38c. ; magic lantern and 

 set of twelve sliders, $1.25; concave and convex mirrors, 

 four inch diameter, $1.25 ; Fig. 746, microscope, $1 ; con- 

 cave and convex lenses, 50c. $5.88. 



Pneumatics, Fig. 182, single barrel air pump and re- 

 ceiver, $7; 191, hand and bladder glass, 75c. ; 211, air 

 shower, 75c. ; 195, pressure glass, 75c. ; 197, Magdeburgh 

 hemispheres, $4 ; 248, syphon, 38c. $13.62. 



Electricity. Fig. 286, nine inch plate electrical machine, 

 $6.50 ; 276, Leyden jar, 75c. ; discharger, 25c. ; 297, elec- 

 trical bells, $1.25 ; 300, pair of image plates and pith images, 

 $1.25; 305, long hair man, 75c. ; 320, swan, 50c. ; 313, 

 revolving flyers, 50c. $11.75. 



* Galvanism and Magnetism. Fig. 391, galvanic battery, 

 $2.50 ; 424, electro-magnet, $1 ; 426, magic circle, $1 ; 

 410, horse-shoe magnet, 50c. ; iron rods and filings, 25c. ; 

 magnetic needle, 38c. ; magnetic fish, 25c. $5.88. 



Chemistry. Fig. 484, two glass retorts, 56e. ; 483, one 

 matrass, 25c. ; 482, two flasks, 12c. ; 514, retort stand, 

 $1.25 ; 511, spirit lamp, 75c. ; 481, one bell glass receiver, 

 50c. ; one stoppered glass jar, 38c. ; 525, one bell glass 

 receiver with cap and stop-cock, $1.75 ; pipe, jet, and gas- 

 bag, 88c. ; 508, blow-pipe, 38c. ; 509, nest of crucibles, 6c. ; 

 512, mortar, 50c. ; 504, air thermometer, 12c. ; 494, funnel, 

 15c. ; 502, two test tubes, lOc. ; 237, scales and weights, 

 $1.75 ; 238, hydrometer, 50c. $10.50. 



