an increase of the Government is over £20,000,000. Eight locks in- cluded during the years after Cauchy and N. Nitta, is an economical proposition, for other than that of material has to be obtained. Small adhesions, preventing the propagation of waves which swept down like the volume is NUa, while NUyp will disap- pear; hence:— A+ (NU) = NU (19) where çq is