[ 139 ] 



VI Tin- Sncdfir. If i'n tx of McMh and tJic /. 

 INDEX SLIP. 



Weight. Part II! 



Decific Heat to Atomic 



By W. A. TILDEN, D.Sc.. F.R.S., Pn>f. 



TILDBN, W. A. The Specific Heats of Metals and the Relation of Specific 

 Heat to Atomic Weight. Part III. 



Phil. Trans., A, vol. 203, 1904, pp. 139-149. 



Specific Heats of various Metals ; Changes with Temperature ; Belation to 

 Atomic Weights ; of Compounds and Alloys ; of Gaseous Carbon ; 

 Neumann's Law verified. 



TILDES, W. A. Phil. Trans., A, vol. 203, 1904, pp. 139-149. 



THE law of NEUMANN assumes that v.h.-i. .,: 

 retains the same capacity ?<>r heat a> \\\- 



This genera lisa i it m is, ho'.M , -,,.,, , i . 



heats of elements ;ni(l theii .'oMijiounds ! 



Attention was directed in I 'art If <.|' 

 found in the influence of temperatuie t" 

 aluminium on the one hand, and sikei ... 

 now about to he described were iindurt:j 

 extent these differences persist in tin- 



If the calculate :eats of rli-mei 



stry in the Royal 



temperatures through a oo tu- 

 rn the separate state at (\M- xtnn- U'mpn; 

 must he due to a fundanteiital dill^i.-nc.' 

 not to a difference in their >tat.-^ of ;t^"ir-.-ili,n! 



The specific heats-of nirkel suljjhide a;,d hiivn 

 through a range of temj>-ra tin t- fVotu -18:1' t 

 melting-point of sulphur, ,-i.iid espefiaily (< 

 modifications of this element in the solid .-{..T. 

 attempt determinations of its --pecitic heat at s^i 



The only element which seemed to present ti 



fur the purpose contemplated was tellurium. I 



Wipply of tellurium which had already been ret 



aud precipitation by sulphurous acid. It 



-sium cyanide, solution in water, HIM! 



-muds of silver, nickel and tin with tett 





An. Chuji Fhy'n.' [3], I 

 t ' Pliil. : . ,r. 801, p. 37 (1W 



T 2 



> chemical combination it 

 hied or elemental state. 



'd for the mean specific 



< * 



to the great differences 



' various metals, such as 

 itlier. The experiments 

 of ascertaining to what 

 tents. 



n are equal at various 

 itomic heats of the same 

 rence between any two 



elements concerned and 



L_l 



e already been compared 



but owing to the low 



e of several allotropic 



thought worth while to 



u res for this purpose. 



: of characters required 



to Dr. T. K. ROSE for a 



al dissolutions in aqua 



purified by fusion with 



by exposure to air. 



nade by the following 



Trans.,' 1865. 



27.5.04 



