Rome, an invention obtained there, [353]; “Claudius his studies at,” [416].

Royal Society, Transactions, [351]; Baron Guilford declines being proposed for, [352]; Sir W. Petty, and Dr. Grew, their discourses, [365]; Savery exhibits his model, [484]; “first appearance in the world” of Savery’s engine, [494].

Rule of gradation, [448], [449].

S.

Sakers, cannon, [467].

Savery, Thomas, noticed, [369]; note, [371]; model engine for raising water, [484], [485]; his “Miners Friend,” [485]; his description and the “Century” compared, [486], [487]; Bradley’s account, [487]; engine at Cambden House, [487]; Switzer’s account, [487], [488]; its discovery attributed to a tobacco-pipe, [488]; the same to a Florence flask, [489]; noticed by Dr. Desaguliers, [488][490]; accused of obtaining and destroying the Marquis’s books, [489]; this charge examined, [492], &c.; as an independent inventor, [497]; his career, [498].

Scantling explained, [348].

Scarioni, Francesco, his Centuria, [346].

Science, state of, to 1667, [348].

Screwed ascent of stairs, [445].