SCHOOL APPARATUS. 65 



1240 Additional eye-pieces, each ... $5.00 



1241 Micrometer eye-piece, with spider lines and 



screw movement - 30.00 



1242 Fig. 793, Wheatstone's sterescope 



$3.50, 5.00, 6.00, and 7.00 



1243 Daguerreotype views on metal or glass - 2.00 



1244 Claude Lorraine mirror, in morocco case, 



4 by 5J inches - - 2.50 



1245 Claude Lorraine mirror, 5 by 6 inches - 4.50 



6 by 7 inches - 6.00 



1246 Fig. 794, dioptric lantern, with gas appara- 



tus - - 135.00 



1247 Fig. 794, dioptric lantern, with solar lamp 120.00 



1248 Fig. 795, trinoptric lantern, with gas appa- 



ratus - - 150.00 



1249 Fig. 795, trinoptric lantern, with solar lamp 135.00 



1250 Fig. 796, binoptric lantern and apparatus for 



oxy-hydrogen light - 265.00 



1251 Oxy-hydrogen microscope for binoptric lan- 



tern - - 110.00 



1252 Oxy-hydrogen polariscope and apparatus 



for binoptric lantern - 110.00 



1253 Fig. 797, telegraph model - 7.50 



1254 Fig. 797, telegraph model, without brass 



reel - ... 6.00 



1255 Fig. 797, telegraph model, with clock move- 



ment - - 35.00 



1256 Fig. 798, magnetic beam engine - - 9.00 



1257 Fig. 799, magnetic axial engine - 10.00 



1258 Fig. 799J, magneto-electric machine, with 



permanent magnet : no liquids or acids 

 required - 10.00 



1259 Fig. 800, youth's chemical cabinet, 



$2.50, 3.50, and 5.00 



1260 Cases of chemicals and apparatus, 



$10, $15, and 28.00 



1261 Fig. 801, steam-engineworking model - 30.00 



1262 Fig. 801, steam-engine working model, 



larger 50.00 



1263 Common school apparatus, consisting of 



juvenile instructor, numeral frame, geo- 

 metrical forms, arithmetical solids, geologi- 

 6* 



