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THE SCIENTIFIC PAPERS OF 



The relation between the resistance and temperature is given in 

 the following table : 



The values for a, /3, y deduced by the method of least squares 

 are a = '005 ; 0= '000694 ; y= -'7285. 



In conclusion I have pleasure in acknowledging the assistance 

 I have received in conducting the experiments, and in the pre- 

 paration of this Paper, from Messrs. E. Lauckert and Edward 

 Hopkinson, D.Sc. 



