| In the spring of 1841, Henry Talbot patented this new negative process and called it the calotype. |
| In 1842 Talbot received a medal from the British Royal Society for his experiments with the calotype. |
| Why not adopt and abide by the simplicity of the calotype process as given in a late Number? |
| The calotype was physically developed and fixed with a solution of sodium hyposulfite instead of a salt solution. |
| He was among the first of the French painters to recognize the aesthetic potentials of the calotype. |
| Curiously enough, though for very obvious reasons, the Daguerreotype seems to favour one method, the calotype the other. |
