304 



T A BLE I . continued. 



Specification of compound. 



Specific 

 conducti- 

 vity. 



SERIES II. 



397-5 copper+2'5 silver 



9987 copper4- 1'3 silver 



997-5 copper +2-5 lead 



998-7 copper +1-3 lead 



997-5 copper 4- 2-5 tin 



998-7 copper + 1-3 tin 



99 9 copper 4- 1 silver 



999copper+l lead 



999 copper -f -5 lead-f-5 silver 



Equal parts of 1 and 3...., 



997-5 copper +2-5 iron 



998-7 copper +1-3 iron 



1000 copper +2-5 protoxide of copper 



1000 parts of 3 & 4- 2-5 protoxide of copper (too brittle to test) 



1000 parts of 4 &4-2'5 protoxide of copper 



997.5 copper 4-2'5 zinc 



995 copper +2-5 lead 4-2-5 zinc 



995 copper+2-5 lead-|-2-5 iron 



998-7 parts of 11 + 1-3 lead 



997-5 parts of 11 4-2-5 zinc 



998-7 parts of 11 + 1-3 zinc 



997 parts of 11 + 1-3 lead &4-1-3 zinc 



992 copper 4-8 zinc 



996 copper 4*4 zinc 



986 copper 4-14 zinc 



982 copper 4~ 18 zinc 



994 copper -j-6 zinc 



980 copper4-20 aluminium 



990 copper 4- 10 aluminium 



995 copper 4-5 aluminium 



997 copper+3 aluminium 



Pure copper, from whtch all the above were made 



69-8 

 117-7 



94-5 

 105-8 



91-6 

 116-9 

 126-7 

 134-2 

 128-0 



89-3 

 129-7 

 113-7 

 122-5 



119-7 

 108-9 



85-1 

 131.5 

 135-0 



77-6 



95-2 

 117-6 

 118-9 

 117-0 



80.2 

 102-3 

 109-5 



44-0 

 128-7 

 122-5 

 130-2 

 120-9 



TABLE II. First Series (10 specimens) arranged in order of 

 conductivity. 



