tuberculation was found to have taken place on the interior surface of the 

 pipe, and a second series of experiments gave / = '00698. 



-f 7 2 



MEAN VALUES OF / AND C, IN FORMULAE h = ^ - AND v = C \/ m i. 



LEAD. (From Thrupp's Exponential Formula.) 



WOOD. (From Tutton's Results.) 



