For these measures there are adopted the fundamental unities - centimeter, gramme, second, and this system is briefly designated by the letters C., G., S. The practical units, the ohm and the volt, will retain their present definitions; the ohm is a resistance equal to 109 absolute unities (C., G., S.), and the volt is an electromotive force equal to 108 absolute unities (C., G., S.). The practical unit of resistance (ohm) will be represented by a column of mercury of 1 square mm. in section at the temperature of 0°C. An international commission will be charged with ascertaining for practice, by means of new experiments, the height of this column of mercury representing the ohm. The name ampère will be given to the current produced by the electromotor force of 1 volt in a circuit whose resistance is 1 ohm. Coulomb is the quantity of electricity defined by the condition that in the current of an ampère the section of the conductor is traversed by a coulomb per second. Farad is the capacity defined by the condition that a coulomb in a condenser, whose capacity is a farad, establishes a difference of potential of a volt between the armatures.