He subsequently studied at Edinburgh University and at Guy's Hospital, and spent some time in the medical schools of Paris and Vienna.
[1][2][3] From 1858 to 1866 Collingwood held the appointment of lecturer on botany to the Liverpool Royal Infirmary School of Medicine.
[1] In 1865 Collingwood issued Twenty-one Essays on Various Subjects, Scientific and Literary, and he wrote on his expedition in Rambles of a Naturalist on the Shores and Waters of the China Seas (1868).
He published expositions of his religious beliefs, including: A Vision of Creation, a poem with a geological introduction (1872); New Studies in Christian Theology (anon.
[1] Collingwood married Clara (died 1871), daughter of Lieut.-col. Sir Robert Mowbray of Cockavine, Scotland; they had no children.