The transportation of a Marshall 'Britannia' boiler across the Indian countryside by a vast team of oxen and men. Many thousands of portable steam engines were made between the 1840s and 1920s. Most were used in agriculture, and some were used to drive equipment in factories. Marshall, Sons & Co Ltd and several other companies made 'colonial' boilers for overseas sale; this particular boiler is representative of the type, being fitted with a log-burning grate. Date: circa 1920