Honorary Membership was limited to 10 from 1890-1900, and to 15 from 1901 onwards. Corresponding Membership was a lesser class of Honoris causa membership in the early years. A few honorary members, such as Barnard, were first made corresponding members for a short time before being recommissioned as honorary members.
Nation(s) |
Start | End | |
|---|---|---|---|
| Harrison, Mr. Henry | USA | 1913 | 1929 |
| Crawford, Dr. David L. | USA | 1997 | 2024 |
| Woolley, Dr. Richard v.d.R. | United Kingdom/South Africa | 1961 | 1986 |
| Peal, Mr. Samuel Edward | United Kingdom/India | 1891 | 1897 |
| Newnham, Right Rev. Jervois Arthur | United Kingdom/Canada | 1895 | 1905 |
| Brown, Dr. R. Hanbury | United Kingdom/Australia | 1987 | 2002 |
| Greenwood, Cpt. W. Nelson | United Kingdom | 1898 | 1906 |
| Spencer Jones, Sir Harold | United Kingdom | 1947 | 1960 |
| Maunder, Mr. Edward Walter | United Kingdom | 1894 | 1928 |
| Ryle, Sir Martin | United Kingdom | 1973 | 1983 |