716 Proceedings of Royal Society of Edinburgh. [sess, 
Table of Calculated Electrical Resistances , the Resistance of Silver 
taken as Unity. 
Metal, 
resistance of 
which is to be 
calculated. 
Metal whose 
resistance is 
known and with 
which the 
former is paired. 
Calculated 
resistance. 
Observed 
resistance. 
Multipliers. 
Melting 
;• points taken as * 
Metal. 
De- 
cent. 
Metal. 
Deg. 
Cent. 
Aluminium . 
Silver 
1-911 
1-935 
0 
A1 
700 
Silver 
1000 
Copper . 
Copper 
1-04 
1-063 
0 
Copper 
1045 
}J 
Aluminium . 
19464 
1-935 
0 
A1 
700 
Platinum 
Zinc . 
5 809 
6-022 
0 
Pt” 
2000 
Zinc 
430 
Antimony 
Lead 
6-023 
0 
Antimony 
2100 
Lead 
24-10 
23-60 
0 
425 
334 
Gold 
Silver 
1-383 
1-369 
2 
Gold 
1037 
Silver 
1000 
Aluminium . 
Gold 
1-8933 
1-935 
A1 
700 
Gold 
Copper 
1-388 
1-369 
2 
Iron 
1530 
Copper 
1045 
Iron 
Silver 
6-287 
6-460 
3 
Silver 
1000 
Platinum 
>> 
5 974 
6-022 
5 
Pt 
2000 
Zinc 
>> 
3-485 
3-741 
5 
Zinc 
430 
Lead 
>) 
13-86 
13-05 
25 
Lead 
334 
; t 
Antimony 
Aluminium 
22-51 
23-60 
25 
Antimony 
425 
Ai’ 
700 
Zinc 
3-5217 
3-741 
5 
Zinc 
430 
Platinum 
u 
5-4325 
6-022 
5 
Pt 
2000 
Zinc 
Copper 
3-555 
3-741 
5 
Zinc 
430 
Copper 
1045 
Platinum 
Gold '. ! 
5-493 
6-022 
5 
Pt 
2000 
Zinc 
3-481 
3-741 
2£ 
Zinc 
430 
Gold 
1037 
Platinum 
5-322 
6-022 
Pt 
2000 
ff 
Tin 
Silver 
8-354 
8-784 
14 
Tin 
235 
Silver 
1000 
>> 
Aluminium 
8-4366 
8-784 
14 
Al 
700 
,, 
Copper 
8-535 
14 
,, 
,, 
Copper 
1045 
Nickel . 
Gold . 
8-344 
7 
j y 
Gold 
1037 
Tin . 
8-638 
8-285 
H 
y 
Nickel 
1450 
Silver 
81633 
” 
6 
Silver 
1 1000 
” • ' 
Aluminium 
8-0689 
6 
A1 
700 
” 
” 
* Plus 273° for reduction to absolute temperature. 
( Issued separately May 18, 1905.) 
