Both crude and concentrated lime-juice is exported, and essential oils are extracted from the rind of the agrumi, more particularly from that of tile lemon and the berganlot.
The main distinction is the occurrence in the tissue of the fruit, or beneath the rind, of clusters of cells filled with hard woody deposit in the case of the pear, constituting the "grit," while in the apple no such formation of woody cells takes place.
The old idea that it was made from layers or pellicules growing between the rind and a central stalk has been abandoned, as it has been proved that the plant, like other reeds, contains only a cellular pith within the rind.
The fairest and most considerable of Palacky's antagonists in the controversy aroused by his narrative of the early reformation in Bohemia was Baron Helfert, who received a brief from Vienna to write his Hus rind Hieronymus (1853) to counteract the impression made by Palacky's History.
Palacky replied in his Geschichte des Hussitenthumes rind Professor Leler (Prague, 1868) and Zur bohmischen Geschichtschreibung (Prague, 1871).