INDEX. 



Air-pumps, 17, 69. 



Analysis of electrolytic gas, 88, 91. 



" " " oxidation of mercury in, 89. 



Balances used, 28, 37, 48, 97. 



" protected from currents of air, 29, 30. 



Capacity of globes for weighing gases, method of determining, 2. 

 •' " " " table of results, 12, 76. 



Cathetometer, 23. 



Combination of hydrogen anJ oxygen, apparatus for, 99. 



" " " manipulation in, 100. 



Composition, volumetric, of water, method for determining, 83. 



" " " results, 95. 



Compression of exhausted globes, 16. 



Correction for difference of volumes to be weighed, 16, 48. 

 Counterpoise, for combustion apparatus, 99. 



" for globes, 16. 



" for tube holding palladium, 71, 98. 



Desiccators for globes, 35, 54. 



" " drying air in, 36. 



Density, results for electrolytic mixture, 92. 



" " for hydrogen, 60, 63, 74, 80. 



" " for oxygen, 32, 50, 55. 



Error, sources of, 74, 105. 

 Eudiometer, large, 89. 

 Exhaustion, measurement of, 18. 

 Expansion, of brass, value assumed, 5. 



" of water, value assumed, 5, 10. 



" of glass, determination, 10. 



Gas, electrolytic, analysis of, 88, 91. 

 " " density, 92. 



" voltameter for producing, 85. 



Glass, expansion determined, 11. 



115 



