The Eucharistic vestments were placed over the cassock, as the cassock was placed over the under-garments of the wearer. But it was so entirely concealed by the long alb that it could scarcely be regarded as an essential part of the vestments for the Eucharistic office. The case was different, however, when the priest was vested in processional attire, for the lower end of the cassock appeared very prominently under the surplice, and its presence was consequently essential to complete the processional outfit. We therefore discuss this vestment under the head 'Processional' rather than under the head 'Eucharistic.' Cassocks were originally invented for purposes of warmth, and hence were lined with furs. This custom was retained when the cassock became exclusively a clerical dress, and we often find in monuments of ecclesiastics indications at the wrist that the cassock was so lined. The colour of the vestment was invariably black for ordinary ecclesiastics, scarlet for doctors of divinity and cardinals, purple for bishops and prelates, and on high occasions for acolytes; for the Pope, white. The fur with which the cassock was lined was ermine or some other precious kind for dignitaries; but ordinary priests were strictly forbidden to wear anything more costly than sheepskin. The cassock as we find it represented on mediaeval monuments was probably open to the breast; I do not recollect having observed any counterpart to the modern cassock, with a row of buttons from neck to hem (humorously compared by Lord Grimthorpe to a boiler with a close row of rivets!). In some parts of France and in Rome the cassock is kept in place by a sash; this also is a modern innovation probably suggested by the custom of members of the monastic orders. II. _The Surplice._—From its fur lining, the cassock was called in mediaeval Latin the _pellicea_; the name _superpellicea_ was accordingly given to the vestment which was worn immediately over it—a name which has passed by natural phonetic modifications into 'surplice.'