114 Atomic Heat in the Periodic Series of the Elements. 



Table {continued). 

 Group IV. b. 



Cobalt 0-1045 8'6? 0'899 Regnault, Rammelsberg. 



Rhodium ... -058 121? -702 Regnault, Deville and Debray. 



Iridium -030 2242 -672 Violle, Deville and Debray. 



Group V. 



Nitrogen 090 Olszewski. 



(wnitel r 0*202 183T 0371 Kopp, Pisati and de Franchis. 



Arsenic (am.) 1)758 4 71 "356 Bettendorff and Wullner. 



Antimony ... -051 6"697 '341 Lorenz, Schroder. 



Bismuth -030 975 -292 



Crystalline Arsenic has the values C = '083, D = 573, CD = 0475 (Betten- 

 dorff and Wullner). 



GroupV.«. Vanadium, Niobium, and Tantalum have not had their specific 

 heats determined. 



Group VI. 

 Oxygen 1'137 Olszewski. 



S (rhomb) ]f " 1 ' 70 - 2 ' 075 °' 353 Regnault, Pisati. 



Se \ e crvsM } "° 74 4 " 5 ' 333 K ° PP ' Rammelsber g- 



Tellurium ) . 04g ^ . 3Q7 -gabre, Rammelsberg. 



(cry st.). J b 



Group VI. a. 



Chromium... 0117? 073 0787? Kopp, Glatzel. 



Molybdenum -006 8'6? -568 De la Rive and Marcet, Debray. 



Uranium ... '028 187 '524 Blumcke, Zimmermann. 



Group VI. b. 



Nickel 0-108 8*9 0'961 Regnault, Schroder. 



Palladium ... '057 12-148 "692 Violle, Dowry. 



Platinum ... -031 215 "666 Schiitz, Deville and Debray. 



Most observers find D for Pd as low as 11 -5 ; Dowry's value seems reliable, 

 and gives concordant results. 



Group VI. g. 



Erbium ...... 



Tungsten ... 0035 1877 0657 De la Rive and Marcet, Waddell. 



Group VII. 



Fluorine 



Chlorine 1*46 Knietsch. 



Bromine 0'084 3-187 0268 Regnault ; Pierre, Quincke, 



v. d. Plaats. 



Iodine '054 4-95 *267 Regnault, Gay-Lus?ac. 



Chlorine is neglected, as are Oxygen and Nitrogen, because we have only 

 their specific heats as gases. 



Group VII. a. 

 Manganese... 01217 7'39 0899 Regnault, Glatzel. 



It will be noted from the above that in group I. the atomic 

 haats are nearly Li = 4a, Na = 2a, K = #, where a is 0*144. 

 In group II., similarly, the ratio is Be = 5a, Mg = &?, 



Ca = 2a. 



