CARPOLITHI, or FRUIT-STONE ROCKS of the Germans, are composed of a kind of jasper, of the nature of the amygdaloides, or almond-stones. Bertrand asserts that the latter are those which appear to be composed of elliptical pieces like petrified almonds, though, in truth, they are only small oblong pieces of calcareous stone rounded by attrition, and sometimes small mussel-shells connected by a stony concretion. The name of Carpolithi, however, is given in general by writers on fossils to all sorts of stony concretions that have any resemblance to fruit of whatever kind.