| circa 1840s to 1850s | Dr. Henry Elliott |
| circa 1862 to 1870 | Dr. John McMillan |
| 1864 to 1865 | Dr. Alexander McGilvray |
| 1868 to 1883 | Dr. James Campbell |
| circa 1865 to 1898 | Dr. Alexander Francis Falconer |
| 1884 to ? | Dr. Chute |
| 1901 to 1920 | Dr. James Fraser Ellis |
| 1901 to 1919 | Dr. Lambert D. Densmore |
| 1919 to 1920 | Dr. Stella Pearson |