| Adam Smith - 1789 - 526 páginas
...with his companions, obferved that, by tying a ftring from the handle of the valve which opened this communication to another part of the machine, the valve would open and fhut without hi* afliftance, and leave him at liberty to divert himfelf with his play-fellows. One... | |
| John Evans - 1807 - 318 páginas
...with his companions, observed, that by tying a string, from tbe handle of the valve which opened this communication, to another part of the machine, the valve would open and shut without hit assistance, and leave him at liberty to divert himself with his play, fellows. One of the greatest... | |
| Adam Smith - 1809 - 372 páginas
...with his companions, observed that, by tying a string from the handle of the valve which opened this communication to another part of the machine, the...shut without his assistance, and leave him at liberty to divert himself with his play-fellows. One of the greatest improvements that has been made upon this... | |
| Adam Smith - 1812 - 530 páginas
...with his companions, obferved that, by tying a ftring from the handle of the valve which opened this communication to another part of the machine, the valve would open and fhut without his affiftance, and leave him at liberty to divert himfelf with his play-fellows. One... | |
| Adam Smith - 1812 - 520 páginas
...with his companions, obferved that, by tying a ftring from the handle of the valve which opened this communication to another part of the machine, the valve would open and fhut without his affiftance, and leave him at liberty to divert himfelf with his play-fellows. One... | |
| 1825 - 424 páginas
...with his companions, observed that, by tying a string from the handle of the valve which opened this communication to another part of the machine, the...shut without his assistance, and leave him at liberty to divert himself. A most important improvement in the steam-engine was, in this manner, the discovery... | |
| Perry Fairfax Nursey - 1825 - 508 páginas
...with his companions, observed, that by tying a string from the handle of the valve -which opened this communication, to another part of the machine, the valve would open and shut without bis assistance, and leave him at liberty to divert himself with his play-fellows. One of the greatest... | |
| Gill's scientific, technological and microscopic repository - 1830 - 420 páginas
...order to facilitate and quicken their own particular part of the work. In the first steam-engines, a boy was constantly employed to open and shut, alternately,...shut without his assistance, and leave him at liberty to divert himself with his play-fellows. One of the greatest improvements that has been made upon this... | |
| 1831 - 444 páginas
...with his companions, observed that by tying a string from the handle of the valve which opeiifd this communication to another part of the machine, the...shut without his assistance, and leave him at liberty to divert himself with his play-fellows. — Hiuilli's Wealth of Nittions. Mmlame de Starl'e turril... | |
| John Wade - 1833 - 674 páginas
..."boiler and cylinder, according as the piston ascend* «d or descended. One of the boys so employed observed, that by tying a string from the handle of...part of the machine, the valve would open and shut of itself, leaving him at liberty to play with his companions. Similar causes have probably originated... | |
| |