It is found, moreover, that the amplitude of the resulting wave, or the loudness of the sound, is increased by suitably Proportioning the length of the siren pipe and the frequency of the air puffs; whilst the distance at which it is heard depends also in some degree upon the form of the mouthpiece.
"Hertzian Wave Wireless Telegraphy"
John Ambrose Fleming
The workman came; but his mode of Proportioning the ingredients, in which lay the secret of the effects he produced, was by taking them up in handfuls, while the common method was to weigh them.
"A System Of Logic, Ratiocinative And Inductive (Vol. 1 of 2)"
John Stuart Mill
In short, Mrs. Gaskell seems to me one of the chief illustrations of the extreme difficulty of the domestic novel-of the necessity of exactly Proportioning the means at command to the end to be achieved.
"The English Novel"
George Saintsbury