Classic Orders of Architecture. The Grecian: Doric, Ionic, and Corinthian;—and the Roman: Tuscan, Doric, Ionic, Corinthian, and Composite orders (q.v.) are generally thus distinguished.
Clathrate. Latticed like a grating (clathri).
Fig. 167. Clathri over bronze doors.
Clathri, R. A grating or trellis formed of wooden or metal bars; clathri were employed to form the imposts over hypæthral doors, and to light the stables (carceres) under the circus, &c. Fig. [167] represents one of the bronze doors of the Pantheon at Rome with the grating above.
Claude Glass. A dark convex glass for studying the effect of a landscape in reverse. Its name is supposed to be derived from the similarity of the effects it gives, to those of a picture by Claude Lorrain.
Clausula, R. The handle of any instrument whatsoever, when made in such a way that the hand can be inserted into it, as for instance with a ring or sword-hilt. The Strigilis (q.v.) had a handle of this description. Clausula is thus to be distinguished from capulus (a straight handle), and ansa (a handle affixed to another object).
Clava, R. (1) A stout knotty stick, growing much thicker towards one end. (2) A very heavy club with which young recruits went through their exercises. (3) A club like that of Hercules, or a mace or war-club with an iron head, and studded with nails or (more commonly) sharp spikes.
Clavate. Club-shaped; tapering down from the top.
Clavesignati, Med. Lat. The Papal troops were so called, who had the keys of St. Peter on their standards and uniforms.