7 



0- 57r 



3 7-^' 



6- 62!r 



/SO 



^■937 



Weight 

 of 



JVater 



Volume 

 of 



Fouling 



"^v^H^^^^y^. (^^^-f-^^^^^tjf^^ ^'^^^.x^i^ 



7 



i)' 



3 y 



-2 7-7 



If 



J 



/ ^ y 5--^ /a»V. / .A^r^^ 



