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]…
VISCACHA; VIZ-CACHA n.
A large burrowing South American rodent (Lagostomus trichodactylus) allied to the chinchillas, but much larger. Its fur is soft and rather long, mottled gray above, white or yellowish white beneath. There is a white band across the muzzle, and a dark band on each cheek. It inhabits grassy plains, and is noted for its e…