374 
DE.  A.  MATTHIESSEN  OX  THE  THEEMO-ELECTEIC  SEEIES. 
Table  II.  (Continued.) 
2 Silver,  Copper- 
— Antimony  (commercial  wire)  Silver. 
o 
o 
Mean. 
4=  8-0 
4=33-0 
t’= 1-059' 
4=  8-0 
4=31-2 
^’= 1-055 
A-054 
4=  8-0 
4=30-4 
v=1'0d2^ 
1 
Lithium,  Silver — 2 Silver,  Copper. 
4=  5-2 
4=32-5 
v=l-888^ 
4=  5-2 
4=31-5 
t'=l-887 
T -884 
4=  5-2 
4=30-0 
?;=l-880 
4=  5-2 
4=29-0 
v = l-881 
Calcium,  Silver — 2 Silver,  Copper. 
4=  4-3 
4=28-8 
t;=2-132' 
4=  4-3 
4=28-0 
t;= 2-129 
.2-130 
4=  4-3 
4=26-9 
t;=2-129^ 
Iron,  Silver — 2 Silver,  Copper. 
t=  6-0 
4=28-8 
?;=2-616' 
4=  6-0 
4=26-2 
t;=2-608 
.2-609 
4=  6-0 
4=29-8 
t;=2-604^ 
Antimony  (pure 
wire),  Argentine — Lead,  Argentine. 
4=  9-5 
4=35-1 
t;=l-234^ 
4z=  9-5 
4=33-9 
t;=l-236 
.1-236 
4=  9-5 
4=32-9 
t;=l-237* 
Ciyp'per  (galvanoplastic),  Copper — Silver,  Copper. 
^1=26-2  ^2=48-0  ?;=l-240 
^,=26-2  ?^2=46-5  i;=I-246 
f,=26-2  ^,=45-7  ^=1-247 
Strontium,  Argentine — Silver,  Argentine. 
t,=  6-0  ?^2=36T  v=I-383 
t,=  6-0  4=34-7  ^;=l-390 
4=  6-0  4=33-1  ^;=l-389 
All  the  temperatures  are  given  in  Celsius’s  degrees.  For  the  first  experiment  of  the  : 
series,  a thermo-element  formed  out  of  commercial  bismuth  (pressed  wire),  and  silver  ! 
was  compared  with  a thermo-battery  composed  of  five  silver-copper  elements.  The  i 
silver  and  copper  were  the  same  sorts  as  those  Avhose  thermo-electric  constants  were  | 
taken  =0  and  1.  The  temperature  (4)  of  the  water  in  the  box  containing  the  cold  I 
soldering-points  was  7°-6,  and  that  of  the  warm  (4),  24°-0.  The  ratio  of  the  electro-  j 
motive  force  of  the  two  elements  (v)  was  found  =7-163,  in  two  other  experiments,  | 
7-164  and  7-157.  The  mean  of  these  three  numbers  is  7-162,  and  therefore  the  electro-  I 
motive  force  of  a bismuth-silver  element  =35-81,  that  of  a silver-copper  one,  or  in  other  | 
|l-387 
|l-244 
