Fig. 25A. Transverse section on A B. Figs. 26A to 28A. Wooden tumbler lock made by negroes of Jamaica (Museum, Kew Gardens). Fig. 26A. Front view. Fig. 27A. Longitudinal section. Fig. 28A. Transverse section on A B. Figs. 29A to 31A. Wooden tumbler lock from British Guiana (CHRISTY Collection). Fig. 29A. Front view. Fig. 30A. Longitudinal section. Fig. 31A. Transverse section. Fig. 9B. Probable use of fig. 29B, Plate III., as a key for a single tumbler lock. Figs. 10B to 12B. Modern Egyptian wooden tumbler or pin-lock in use at the present time. Fig. 10B. Longitudinal section showing pegs raised by key A preparatory to withdrawing the bolt B. Fig. 11B. Key A. Fig. 12B. Longitudinal section showing pegs down and bolt locked.] [Illustration: PLATE II. _Wyman & Sons, Printers, Gt. Queen St. London, W.C._] [Illustration: PLATE III. Figs. 13B and 14B. Modern wooden tumbler or pin-lock from Yarkand (India Museum). Fig. 13B. Longitudinal section showing pegs raised by key A preparatory to withdrawing the bolt B. Fig. 14B. Longitudinal section showing pegs down and bolt locked. Figs. 15B to 20B. Reproduction of Roman tumbler lock (Mainz Museum) (Lindenschmit). Fig. 15B. Front view. Fig. 16B. Longitudinal section. Fig. 17B. Transverse section on C D. Fig. 18B. Section through A B. Fig. 19B. Bolt (top view). Fig. 20B. Key. _a._ Key. _b._ Bolt. _c._ Block, _e._ Hasp. _f f._ Tumblers. _g._ Spring. _h._ Plate of spring. Fig. 21B. Ancient hasp from Hetternheim, Roman. Fig. 22B. Bronze bolt from Oppenheim, Roman. Fig. 23B. Bronze bolt from Heddernheim, Roman. Fig. 24B. Iron key found in the River Rhine at Mayence, Roman. Fig. 25B. Key for tumbler lock with ward plate, Roman ('La Ferronnerie'). Fig. 26B. Bolt for single tumbler found in the Forest of Compiègne, Roman ('La Ferronnerie'). Fig. 27B. Key to raise single tumbler lock found at Nonfous, Switzerland, Roman ('La Ferronnerie'). Fig. 28B. Modern pick-lock. Fig. 29B. Key found in Germano-Roman tomb at Niderolm (probable use shown in fig. 9B, Plate II.). Fig. 30B. } Anglo-Saxon keys found at Sarr, in Kent ('Archæologia Fig. 31B. } Cantiana'). Fig. 32B. } Two keys from Bornholm, in the Baltic ('Mémoires Fig. 33B. } de la Société Royale es Antiquaries du Nord').] [Illustration: PLATE III. _Wyman & Sons, Printers, Gt. Queen St. London, W.C._] [Illustration: PLATE IV. Fig. 34B. Key found at Caerwent, in Wales ("Isca Silurum"). Fig. 35B. } Two keys found in Roman villa at Hartlip, Kent Fig. 36B. } ('Collectanea Antiqua'). Fig. 37B. } Two keys found at St. Pierre-en-Chastre, Oise. Gaulish. From drawings taken by Gen. PITT-RIVERS, Fig. 38B. } in the Musée de Saint Germain.