Machins. j Jiedf/ 

 Tf,m//Oa Cur, f J)-( 1 Dopm 0\) O ^ 



,Ko, of tMrr/wtfi^tfir y ^ ^ 4/ Cor, 



CtirrcciGfl temperature 

 Air "^O 



SOU 



DHfl 



SOUNDING WIRE. 



UP. 



< ml 



TUKNt. 



6<x) 



llfXJ 



1 Jiia 

 1300 



I5tw 



1700 

 1800 

 1900 



viinu 



^ ^ DREDG E ROPE 



O 



■■'0 



