(S) 



2. C'liAlDlKR gives llic Ibllow iiii; ronu lo llic wcll-kiiow n Iniiinilii 

 ot' Nkknst lor the eleelroniolixe toi-ee : 



E = KT (loq-- loo M + 7' -. 



This is evidently a mistake as the seeoiid term after the siiiii of 

 e(|iiaiity does not belonji,' to this loi-mula hut I'oi-ms part of the well- 

 know ii e(|natioii of (iiHHs and von llKLMnoi/r/ 'j. 



'i'his mistake we may pass ovei-. 'i'he followinii' tahle contains 

 C'iiai"I)]1':h's i-esidts which have boon oi)tained by means of Uoitv's 

 metiiod foi' the mcasni-enuMit of electi'omoti\ e forces. His cells were 

 constructed aceoi-dinn' to the scheme: 



n Coppei- snlphatc solution Dilute solution of Zinc I r,- 



Copper ; ^\ , , ,^o ,, i , , . ! /^'"'•• 



saturated at 15° C 



sulphate. 



3. The pa|»ei" coidains but few details of the manner in which the 

 experiments were condncted : "rélément 1)anii<',ij, est constitne par 

 denx \ases en verre, contenant lun la solution de sulfate de /.inc. 

 Tautre la solution de sultate de cuixrc; ccs deirx \ases soul rc'-uiii^ 

 [lar un siphon foi-nu' d'uu tul»e de \erre rempli de colon inibilH' de 

 la solnlion de sulfate de zinc dans rune dos branches, de la solution 



1' A B L E I. 



ZiiSO^.TII/) in ton juits 

 ol \v:it('r. 



löli'ivli'oiiKit. Ibrc(> (l.')°(-'.) ('(M'iticiiMit rit' li'iii|i('r:U un 



Vo 

 1 



2 

 4 



6 

 10 

 30 



00 

 liX) (saturated) 



I. ():)<!( I V(.lt 



l.li:!s 



1.1151 



-1.1 aos 

 i.iai'.i 

 1 i2o:i 



■Ï.12VJ 



1 i^os 

 l.liss 

 1.1 or. 4 



•1.1003 

 1 .001»^ 



O.CMliii 



u.onni.". 

 — o.oo<»i;{ 



-l-( I 0( )( l( I.") 



-)-().( i( M mj:) 



-}-(! (MHMK'. 

 -}-().( M»(i:{ 

 -j-U.OI OKI 



—().()( H to:! 

 — n (Miuti 

 — n iMK»ti 



- .(tOUiit) 



^) Chaudier wrongly calls this equation, the equation oi' Lord Kelvin. 



