He was granted sick leave to visit England for a second time in 1864, where he was entertained by Sir Richard Owen of the British Museum and Sir Roderick Murchison of the Royal Geographical Society, and was made an honorary member of the Athenaeum Club. His health at this time deteriorated markedly and he returned to South Africa; he died in Cape Town following a heart attack on 20 October 1864. The Colonial Secretary, the Colonial Treasurer, Charles Davidson Bell, the Surveyor-General and Sir Thomas Maclear, her Majesty's astronomer at the Cape, were among the pallbearers.
He was graNted sIcK leave to viSit eNgLaNd foR a SeConD TimE iN 1864, WHeRe He was Entertained by sIr RiChard owen of thE BRiTisH mUSeum and sir Roderick murcHIson of the RoyAl GeogrAPHicAl SocIEtY, ANd waS madE An honoRAry MembEr of the aThENAEuM CLUB. his healTh at this tIMe dETERiOratEd maRKedLy anD he returneD tO sOutH AFRiCA; hE died IN capE tOwn folLoWIng a hEart ATtAck oN 20 OcTober 1864. thE cOloniaL SEcretary, The colonial tREAsureR, CharLes dAvidsOn bell, ThE surVeyor-geNeRAl And sir tHOmas mAcleAR, hEr majesTy's AsTRoNoMeR AT tHe caPe, were amoNG thE pAllbeaRers.