of Magneto-Electricity. 349 



quisite velocity it was necessary however to assist the motion 

 by the hand. 



No. 9. 



The following series of results was obtained with the same 

 apparatus, by turning the wheel in the opposite direction. 



No. 10. 







Revolu- 

 tions of 

 Electro- 

 Magnet 



per 

 minute. 



Deflec- 

 tions of 

 Galvano- 

 meter of 

 1 turn. 



Circuits 

 complete 

 Circuits 

 broken. 

 Circuits 

 complete. 

 Circuits 

 broken. 



Mean 

 Circuits 

 complete 



Mean 



Circuits 



complete. 



Corrected 

 Result. 



600 

 600 

 600 

 600 



600 

 600 



35 10 

 



37 10 







36 10 



Mean 

 Tempe- 

 rature 



of 

 Room. 



65-38 

 64-73 

 65-10 

 64 93 



Mean 

 Differ- 

 ence. 



0-62+ 

 075 + 

 1-40+ 

 1-23+ 



1-01 + 

 099+ 



Temperature of 

 Water. 



Before. 



63-25 

 65-51 

 63-33 

 66-28 



After. 



68-75 

 65-45 

 69-66 

 66-05 



Loss or 

 Gain. 



5*50 gain. 

 0-06 loss. 

 6-33 gain 

 0-23 loss. 



5-915gain 

 0-145 loss 



600 36 D 10'= 1-845 of current. 



606 gain. 



