ENGINEERING CONSTRUCTION AND RAINFALL. LXIII. 



outspoken criticism, and having been charged by some with not 

 having propounded a definite solution of the matter, he begged 

 to decline such a herculean task ; indeed, in the paper he stated 

 that this subject did not lend itself to general treatment. 

 Each particular case must be decided on its merits — not, how- 

 ever, that he wished it to be inferred from this that formulae which 

 were put forward for general use might prove useless on that 

 account; but that such formulae, if used intelligently, can and 

 cannot, according to its nature, be applied to a particular case. 



