60 W. & L. E. GURLEY, TROY, NEW YORK 



- .2 depth 

 _" -(c-b)x.2*b: 



O -5 depth 



(c-b)x.5 + b 



O .8 depth 



(c-b)x.8 + b 





FH.. .'52 Diagram iudicntinu' iH'iai'mn used in making Discharge 



. \\itli I-'nn t'>r N' 



The notation and a form for recording the data are illus- 

 trated in Fig. 32. The remaining seven columns are similar to 

 those in Form No. H-326 (See page 55). 



