Bourne spent six extremely productive years in India, and by the time he returned to England in January 1871, he had made approximately 2,200 fine images of the landscape and architecture of India and the Himalayas. Working primarily with a 10x12 inch plate camera, and using the complicated and laborious Wet Plate Collodion process, the impressive body of work he produced was always of superb technical quality and often of artistic brilliance. His ability to create superb photographs whilst travelling in the remotest areas of the Himalayas and working under the most exacting physical conditions, places him firmly amongst the very finest of nineteenth century travel photographers.