 | Thomas Newbigging - 1898 - 616 Seiten
...having on its upper surface a deep circular channel to receive the wide end of a glass trumpet-tube. " Pieces of sesqui-carbonate of ammonia, from the surface...which the catch falls, and will again support the lever tap in the horizontal position. The lever is then made to rest against the catch so as to turn... | |
 | Charles Edward Groves, William Thorp, William Joseph Dibdin - 1903 - 480 Seiten
...apparatus to be employed is given in Fig. 180, on p. 371. Pieces of sesqui-carbonate of ammonia, I'nun the surface of which any efflorescence has been removed,...catch falls and will again support the lever-tap in. tho GAS REFEREES' INSTRUCTIONS. 365 horizontal position. The lever is then made to rest against the... | |
 | Charles Edward Groves, William Thorp, William Joseph Dibdin - 1903 - 480 Seiten
...sulphur and ammonia. A description of the apparatus to be employed is given in Fig. 180, on p. 371. horizontal position. The lever is then made to rest against the catch so a< to turn on the gas. The index is then turned back to a little short of zero, arid the burner lighted.... | |
| |
... in the horizontal position. The lever is then made to rest against the catch so as to turn on the gas. The index is then turned back to a little short of zero, and the burner lighted. When the index is close to zero; the trumpet-tube is placed in... 