| Authorised form of name | Geer; Gerard Jakob De (1858 - 1943) |
| Other forms of name | Gerard Jakob |
| Other forms of surname | De Geer |
| Dates | 1858 - 1943 |
| Date of birth | 02 October 1858 |
| Date of death | 23 or 24 July 1943 |
| Membership category | Foreign Member |
| Date of election | 26/06/1930 |
| Source | Sources:
Bulloch's Roll
Obituaries:
Obituary Notices of Fellows of the Royal Society 1942-1944 vol 4 pp 475-481, plate, by E B Bailey
Notes:
ON gives death date as 24 July 1943 |
| Code | NA559 |
Archives associated with this Fellow
| RefNo | Title | Date |
| EC/1930/18 | Geer, Gerard Jakob De: certificate of election to the Royal Society | |
| NLB/72/934 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to the Editor of 'Nature'; Messrs Macmillan and Co., St Martin's Street, W.C.2. | 7 July 1930 |