8 Mr. W. N. Bond on the Properties of 



subsequent bending to be slightly larger for the same load. 

 In these experiments on the initial bend, the crystals were 

 by no means ideal single ones, and it is possible that, at any 

 rate in part, this effect was due to the complexity of the 

 specimens. 



•8 





Fio-. 8. 









l 







•6 



o 



14- 3-3 cms. -W 



• l At E»t>«rltnent. 

 X 2 nd 

 o 3*-*- 



.2 

 & '4 







P 



s 



° -2 



1 I J 





, 







J// 





10 



15 Grams. 



The amount of bending at different times after loading- 

 was next investigated in the case of a crystal supported 









Fig. 



9. 











4 



3 



























2 









o 











^s*o 









1 ! 



< 













1 















f Hours. 



1 



1 



N— -J 



1 



> 

 i j 



1 1 





 



26 



40 



60 



80 



100 Hours. 



near both ends and loaded at the middle. Then crystals 

 were used in order to observe both the "initial" bend and 

 the subsequent bending. Fig. 9 shows the result of one of 



