Manchester Meniozis, Vol. xlvi. (1901), No. 0. 1 1 



the Government Grant Committee of the Royal Society. 

 This opportunity is taken to thank Professor Schuster for 

 so kindly placing the ample resources of his laboratory at 

 my disposal, whilst thanks are also due to the Committee 

 of the Davy-Faraday Research Laboratory for the loan of 

 certain parts of the apparatus. Lastly, it is only just to 

 state that the satisfactory results obtained with the 

 apparatus described are attributed to the care and skilled 

 workmanship of Mr. Charles W. Cook. 



