Calculary of a Pear, is a cluster of small, strong knots, which are dispersed through the whole of the parenchyma of the fruit. It is mostly found in rough-tasted, or choke-pears, of which it does not form any essential part; as the several knots which compose it, are only so many concretions, or precipitations out of the sap, in a manner similar to that seen in urine, wine, and other liquors.