782 



Mr. J. C. Buckley on the 

 Fig. 3. 



(6ly7ie cms*. 10" 





+ / 



■y 

















T 

 dynes per cm. 



200 400 600 600 



We also read off the graph (produced backward) that 

 where T=0, 



C = 132000dynecm., 



whence using equation (2) 



tt=l-589xl0 5 . 



1. Verification of equation (4). 



The results obtained in the case of paper and celluloid 

 strips of various breadths are given in the following table. 



b. 



Paper. 

 d.G 

 dT 



2 6 3 



3 r 



255 cm. 



20 



1-5 



10 



0-5 



•690 



•338 



•142 



•0457 



•0053 



Celluloid. 



•703 



•340 



•143 



0426 



•0053 



1-5 

 09 



•120 

 •0275 



•125 

 0274 



