340 



Mr. J. Dewar on the Physical 



Table II. — Specific Heat. Experiments with Bar Palladium. 

 Three Hydrides. Weight of Bar 31-802 grms. Water and 

 Calorimeter 107 grms. 





I. 



11. 



III. 



IV. 



Weight of hydrogen in pal- "1 

 ladium j 



Rise in calorimeter for a fall J 

 of 100° C | 



grm. 

 01905 



2-426 

 2-430 

 2-429 

 2-435 



grin. 

 0103 



2-178 

 2 175 

 2175 

 2167 



grm. 

 00415 



f-944 

 1-958 

 1-958 

 1-967 



Nothing. 



f-740 

 1-780 

 1-760 

 1-760 







2-436* 



2173 



1-956 



1-760 





Rise due to h\ drogen 



0-676 

 3-79 



0-413 

 4-29 



0196 

 5 05 



Nothing. 



Specific heat of hydrogen 



Weight of hydrogen in 



I. in excess of II. ... 00875 



II. in excess of III... 00615 

 I. in excess of III. ... 0-1490 



Increase in calori- 

 meter due to dif- 

 ference of 



I. and II. 0-263 



II. and III. 0-217 

 I. and III. 0-480 



Specific heat from 

 difference of 



I. and II... 3-21 



II. and III. 3-77 

 I. and III. 3-44 



Mean. 



3-47 



Table III. — Specific Heat. Experiments with Palladium Plate. 

 Three different Hydrides. Weight of Plate 37*848 grms. 

 Equivalent of Water and Calorimeter 107 grms. 





I. 



II. 



III. 



IV. 



Weight of hydrogen in pal- 1 

 ladium J 



Rise in calorimeter for a fall J 

 of 100° C 1 



grm. 

 0-210 



2-891 

 2-870 

 2 856 

 2-858 



grm. 

 0-129 



2-694 

 2-657 

 2-646 

 2-659 



grm. 

 00512 



2-368 

 2362 

 2375 

 2402 



Nothing. 



2111 



2 100 

 2082 

 2086 





Mean rise 



2-869 



2 664 



2-337 



2-096t 





Rise due to hvdrogen 



0-773 

 3-930 



0-568 

 4-70 



0-281 



5-88 





Specific heat of hydrogen 



Weight of hydrogen in 



I. in excess of II. .. 



II. in excess of III. 

 I. in excess of III.. 



0081 



0-0778 



0-1588 



Increase in calori- 

 meter due to dif- 

 ference of 



I. and II.... 0-205 



II. and III. 0-287 

 I. and III... 0-492 



Specific heat from 

 difference of 



I. and II. 2-70 



II. and III. 3 94 

 I. and III. 3-31 



Mean. 



3 31 



* Mean of eight experiments. 

 t Mean of six experiments. 



