Edward Jenner Jerram described a "Fall of meteorites at the Cape of Good Hope" in a letter dated 29 January 1839, addressed to E.W. Brayley. It was published in the Philosophical Magazine (London, Vol. 14, p. 392) that same year. Other descriptions of the same event were published by George Thompson* and Thomas Maclear*.
Jerram was the auditor of the Cape of Good Hope Fire Assurance Company in 1837. He also traded with Thomas Le Breton under the name Le Breton and Jerram, but the firm was insolvant by 1834. In the eighteen-fifties Jerram was associated with the firm McDonald, Bush and Company of Cape Town. He was a member of the Cape Town Chamber of Commerce for many years and on 31 May 1849 was one of the 38 leading citizens of Cape Town who established the Anti-Convict Association, to help prevent the settlement of British convicts at the Cape. From the early eighteen-thirties onwards he participated in the activities of various other voluntary organisations in Cape Town. For example, he was a member of the South African Literary and Scientific Institution from its inception in 1832, and served on its council during 1839-1841; he supported the establishment of the Cape Town botanic gardens (1845) and annually subscribed one pound sterling to it; was treasurer of the committee of the South African Library (1846-1856); was an exhibitor at the Great Exhibition of 1851 in London; and a member of the committee of the Cape of Good Hope Agricultural Society (1856-1860).