SPECIFIC HEAT OF ATOMS. 

 SPECIFIC HEAT 



323 



Lead 



Tin 



Zinc 



Copper 



Nickel 



Iron 



Platinum 



Sulphur . 



Mercury . 



Tellurium 



Arsenic 



Silver 



Gold 



Phosphorus 



Iodine 



Cobalt 



Carbon 



Bisrauth . 



Of the first nine substances which are all metals, with the 

 exception of sulphur, the capacities of the atoms approach so 

 closely,, that they may be considered as identical ; their capa- 

 cities appearing to be all nearly one-third of that of the atom 

 of water, in the second column ; and nearly coinciding with 

 the capacity of the atom of lead, one of their number in the 

 third column. The weights of the atoms themselves are added 

 in a fourth column, for convenience of reference. The nine 

 substances in question, taken in the proportions of their atomic 

 weights, will, therefore, undergo an equal change of tempera- 

 ture on assuming an equal quantity of heat. The four metals 

 which follow in the table, namely, tellurium, arsenic, silver 

 and gold, appear to have an equal capacity for heat, which is 

 double that of lead and. the class which coincides with it, while 

 the capacity of phosphorus and iodine is four times greater 

 than that of lead and its class. The capacity of the atom of 



