10 

 STEREOSCOPES. 



£ s. d. 

 Best Spanish Mahogany Stereoscope on improved plan, with 



set of diagrams 1 10 



Satinwood Stereoscope, and Diagrams 17 6 



Mahogany Stereoscope, and Diagrams , 15 



Tin Stereoscope, and Diagrams 5 



Photographic Views on glass each 10 6 



DagueiTCOtvpes from 7 6 to l2 6 



Talbotypes" „ 2 6 to 5 



Diagrams, &c. &c. 



Spanish Mahogany Box to hold 2 stereoscopes and 24 slides 2 2 



Spanish Mahogany Box to hold 1 stereoscope and 32 slides.. 2 2 



Spanish Mahogany Box to hold two dozen slides 1 4 



CASES FOR STEREOSCOPES AND SLIDES MADE TO ORDER. 



DRAWING INSTRUMENTS, &c. 



Wollaston's Camera Lucida, mounted .... from 1 10 to 3 



Drawing Instruments for school use from / ^ 



Ditto ditto in mahogany case 1 5 



Ditto ditto in superior case, 3 ivoiy rules 3 5 



Ditto ditto ditto in electrum 3 15 



Ditto ditto ditto ditto double-jointed 6" 



Beam Compasses from 1 15 



12-inch Ivory Plotting Scales from 7 6 to 1 



12-ineh Boxwood Plotting Scales, set of 3, with offsets 11 



Ivory Folding Rules from 6 



Boxwood Folding Rules „ 10 



Plain Ebonv Parallel Rules „ 4 



Plain Rolling Ebony Parallel Rides „ 9 



Ivory-edged and graduated Parallel Rules per inch 16 



BAROMETERS, THERMOMETERS, &c. 



Pediment Barometers from 3 



Pediment Barometer, best, with float gauge 9 



Wheel Barometers from 2 2 



Standard Thermometer „ 2 10 



Negretti's Maximum Thermometer 110 



SLx's Self-registering Thermometer 1 10 



Horizontal Self-registering Thermometer 17 



Boxwood Thermometers from 3 6 



Simmons's Hygrometer 2 2 



RAIN GAUGES TO ORDER. 



AIR-PUMPS AND EZjECTRICAZi MACHINES 



TO ORDER. 



