People, you know. Dora has felt and so forth. And there were no disciples to forbid such an undertaking. The _Leader_ says: "a very competent mind has long been desirous of investigating the history of timepieces--The driving power--The escapement--Compensating pendulums--The spring balance--The cylinder escapement--The lever escapement--Compensated balance-wheels--Keyless winding mechanism for watches, 425. Rods of Corti, 274. Ruhmkorff coil, 121, _122_. Safety-valve, 32, _33_, 391. Sand-glasses.