286 BENJ. PIKE'S, JR., DESCRIPTIVE CATALOGUE. 

 SET OF APPARATUS FOR CHEMISTRY. PRICE $47 00. 



1. Retort Stand $1 50 



2. Spirit- Lamp 75 



3. Glass Flask with Ring Neck 25 



4. Three Glass Retorts 1 06 



5. Receiver with Stopper 38 



6. Matrass with long neck 37 



7. Pneumatic Cistern 2 00 



8. Two Bell-Glassos, half gallon 



and quart 125 



9. Gas Bottle 63 



10. Bell-Glass, Stoppered 1 00 



11. Deflagrating Jar " and Spoon 1 CO 



12. Bell-Glass with Cap and Stop- 



Cock 200 



Bubble-Pipe, Jet, and Gas-Bit-.'. .1 00 



13. Hydrogen Gas-Pistol 38 



14. " " Balloon 125 



15. Iodine in Glass Flask 38 



16. Scales and Weights 1 25 



17. Dropping Tube 038 



18. Glass Funnel 18 



19. Three Precipitating Glasses 45 



20. Three Test-Tubes 015 



21. Graduated Measure-Glass 63 



22. Beaker Glass 025 



23. Crucibles nest 010 



24. Mortar and Pestle $0 75 



25. Evaporating Dish 38 



26. Adapter . . .". 37 



27. Spatula 038 



28. Blow-Pipe 037 



29. Air Thermometer 19 



30. Eolopile 38 



31. Boiling Glass 050 



32. Steam Apparatus 1 50 



33. Four Candle-Bombs 12 



34. Fire Syringe 1 00 



35. Chry ophorous 1 75 



36. Flameless Lamp 1 25 



37. Conductorneter 1 75 



38. Pyrometer 3 50 



39. Chemical Thermometer 1 00 



40. Downward Conducting Power 



of Heat in Fluids 175 



41. Pair 13-inch Reflectors and 



Stands 5 50 



42. Iron Ball and Stand 1 00 



43. Differential Thermometer 1 50 



44. Improved Iron Retort for Oxy- 



gen 350 



$4703 



A great variety of other Chemical Apparatus on hand. A Com- 

 pound Blow-Pipe and Pneumatic Cistern combined, $8 50 ; larger, 

 $12. Hydrogen Generator, $4. Gas-Bags to hold three or four gal- 

 lons, with Stop-Cock, $3 25 ; larger size, $7 to $10. Sheet-Iron Fur- 

 naces, $8. Davy's Safety-Lamp, in Brass, $3. Apparatus for 

 Specific Heat, $4 ; for Unequal Expansion of Fluids, $4 ; for Ball 

 and Ring Experiment, $2 25 ; for Condensation by Mixture, $1 25. 

 Marcet's Steam-Boiler, with Barometer and Thermometer, $15. 

 Copper Still, Worm, and Tub, $6 to $8. Ure's Eudiometer, $2 50, 

 if graduated, $4 ; Flask-Holder, $1 50 ; Wolfs Apparatus, 4 bottles 



