.A'>). 



7 



. Miu^dnsf-^ JUdu fbo tM'' Mo . 



Jiottoni Umpcrature / ^ 

 Corrcot<t^ temperature 



Mr '^^^ Surfaoa Icf DHft 



Iredge 



SOUNDIMG WIRE. 



DOWN. 



UP. 



t> 

 100 



?tx> 

 300 

 4. -I 

 500 



700 



900 

 1000 



I liKt 

 1200 

 J^CKJ 

 IJ'XJ 

 I t 'jU 

 1600 

 1700 



1900 



9000 

 9tO0 

 3300 

 3300 

 2400 



DREDGt 



yj.io 



MM 



O 



11 



1 y\ 



