PROOF a.
of absolute alcohol and 53.71 parts of water," the apparent excess of water being due to contraction of the liquids on mixture. In England proof spirit is defined by Act 58, George III., to be such as shall at a temperature of 51º Fahrenheit weigh exactly the second, third, and fourth proof spirits respectively. -- P…
RIGOR n.
A sense of chilliness, with contraction of the skin; a convulsive shuddering or tremor, as in the chill preceeding a fever. Rigor caloris ( Etym: [L., rigor of heat] (Physiol.), a form of rigor mortis induced by heat, as when the muscle of a mammal is heated to about 50ºC. -- Rigor mortis ( Etym: [L. , rigor of death]…