FORM OP A SPONGE 



323 



Table op Data for Calculation of Velocities and 

 Resistance (L. asp era. 'A. 11'). 



Therefore, for A, 11, F = (180 + 30) x {1 --024 (^-15)}, where f is the 

 temperature Centigrade. 



* The factors \ and \ allow for the water entering by holes along the 

 walls. 



t At 15° C. From equation (1). 



(1) Calculated for oscular diameter -20, area "031, delivery -26. 



(2) Calculated for oscular diameter -28, area '062, delivery "53. 



