have viewed the subject too much with reference to the nature of things, and not enough to the nature of man. Its authors do not appear to have considered the proportions dictated by nature between the physical organisation of man and the unit of his weights and measures. The standard taken from the admeasurement of the earth, has no reference to the admeasurement and power of the human body. The metre is a length of 40 inches nearly, and by applying to it exclusively the principle of decimal division, no measure corresponding to the ancient foot was provided. A unit of that denomination, though with slightly varied differences of length, was in universal use among all civilised nations, and the type of it is found in the dimensions of the human body. Perhaps for half of the occasions which arise in the life of every individual for a linear measure, the instrument to suit his purpose must be portable, and fit to be carried in his pocket. Neither the metre, the half-metre, nor the decimetre are suited to that purpose. The half-metre corresponds, indeed, with the ancient cubit, but perhaps one of the causes which have everywhere, since the time of the Greeks, substituted the foot in place of the cubit, has been the superior convenience of the shorter measure. Besides which, the cubit being the unit, the half cubit might serve the purpose of the foot; but the metre, divisible only by two and ten, gave no measure practically corresponding to the foot whatever. It appears to have been considered that decimal arithmetic, although affording great facilities for the computation of numbers, is not equally well suited for the division of material substances. A glance
