He presented to the Ashmolean Museum, Oxford, a variety of fossils and antiquities, which he had described in his works, and received the thanks of the university and the degree of Doctor of Civil Law. Borlase was well acquainted with most of the leading literary men of the time, particularly with Alexander Pope, with whom he kept up a long correspondence, and for whose grotto at Twickenham he furnished the greater part of the fossils and minerals. He also sent collections of mineral and fossil specimens to Dr William Oliver and to a number of natural historians in Europe.