176 Dr. M. Maclean. On the, Effects of 



Table VIII.— Glover's Hard Copper. 

 Current from Stretched to Unstr etched. 

 Temperature difference = 86°'5 C. Total resistance in circuit 

 = 15 -5 9 ohms. 



Total -vveiglit 

 in grammes. 



Percentage 

 temporary 

 elongation. 



Percentage 

 permanent 

 elongation. 



Current in 

 mikroampere 

 per degree 

 with weight on. 



Thermo-electric 

 difference in 

 mikroTolt 

 per degree. 



250 







-000335 



-005226 



500 



0-006 





-000469 



-007316 



750 



0-014 





-001106 



-01725 



1000 



019 



0-006 



-001241 



-01934 



1250 



-0285 



-0135 



-001375 



-02143 



Table IX.— Glover's Soft Copper. 



Current from Stretched to Unstretched. 



Temperature difference = 87° C. Total resistance in circuit 

 = 15-56 ohms. 



Total weight 

 in grammes. 



Percentage 

 temporary 

 elongation. 



Percentage 

 permanent 

 elongation. 



Current in 

 mikroampere 

 per degree 

 with weight on. 



Thermo-electric 

 difference in 

 mikrovolt 

 per degree. 



300 







0-00020 



-003113 



500 



0*-*]4 



0-03 



-00083 



0-01296 



750 



0-28 



0-105 



-00123 



-01919 



1000 



1-18 



1-00 



-00143 



0-02225 



1200 



4-84 



4-72 



-00103 



-01608 



Table X. — Reostene "Wire. 

 Current from Unstretched to Stretched. 

 Temperature difference = 86° -5 C. Total resistance in circuit 

 = 43-39 ohms. 



Total weight 

 in grammes. 



Percentage 

 temporary 

 elongation. 



Percentage 

 permanent 

 elongation. 



Current in 

 mikroampere 

 per degree 

 with weight on. 



Thermo-electric 

 difference in 

 mikrovolt 

 per degree. 



250 



0-037 





-002682 



0-1163 



500 



0-085 





-003521 



0-1528 



750 



0-152 



0-037 



0-003521 



0-1528 



1000 



0-220 



073 



-003588 



0-1557 



1250 



0-257 



0-104 



-003721 



-1614 



1500 



-318 



0-134 



-003957 



-1717 



1750 



0-417 



0-201 



-004526 



-1963 



