 | Thomas Thomson - 1830 - Liczba stron: 696
...to repeat his experiments. This he did ; and now perceived that the precipitate, which he had taken for orpiment, was not so in reality, but owed its existence to the presence of another metallic oxide, different from arsenic and probably new. Specimens of this oxide of zinc, and of the... | |
 | Thomas Thomson - 1831 - Liczba stron: 1060
...did very readily ; and he now perceived tliat the precipitate, which had been taken * by him at first for orpiment, was not so in reality, but owed its...probably new. To obtain full certainty on the subject, specimens of the oxide of zinc, and of the ' yellow precipitate, were sent to Stromeyer ; who immediately... | |
 | George Gore - 1878 - Liczba stron: 694
...to repeat his experiments. This he did, and now perceived that the precipitate, which he had taken for orpiment, was not so in reality, but owed its existence to the presence of another metallic oxide, and probably new. Specimens of this oxide of zinc, and of the yellow precipitate, were... | |
 | George Gore - 1878 - Liczba stron: 680
...to repeat his experiments. This he did, and now perceived that the precipitate, which he had taken for orpiment, was not so in reality, but owed its existence to the presence of another metallic oxide, and probably new. Specimens of this oxide of zinc, and of the yellow precipitate, were... | |
| |
Roloff (£'/) to repeat his experiments on the oxide once more. This he did very readily and he now perceived that the precipitate which had at first been taken by him for orpiment, was not so in reality; but owed its existence to the presence of another... 