We have still to mention some of his more important Oriental publications, which he either began or finished after his return to England. The first is his “Algebra, with Arithmetic and Mensuration, from the Sanskrit of Brahmagupta and Bhâskara, preceded by a Dissertation on the State of the Sciences as known to the Hindus,” London, 1817. It is still the standard work on the subject, and likely to remain so, as an intimate knowledge of mathematics is but seldom combined with so complete a mastery of Sanskrit as Colebrooke possessed. He had been preceded by the labors of Burrow and E. Strachey; but it is entirely due to him that mathematicians are now enabled to form a clear idea of the progress which the Indians had made in this branch of knowledge, especially as regards indeterminate analysis. It became henceforth firmly established that the “Arabian Algebra had real points of resemblance to that of the Indians, and not to that of the Greeks; that the Diophantine analysis was only slightly cultivated by the Arabs; and that, finally, the Indian was more scientific and profound than either.” Some of the links in his argument, which Colebrooke himself designated as weak, have since been subjected to renewed criticism; but it is interesting to observe how here, too, hardly anything really new has been added by subsequent scholars. The questions of the antiquity of Hindu mathematics--of its indigenous or foreign origin, as well as the dates to be assigned to the principal Sanskrit writers, such as Bhâskara, Brahmagupta, Aryabhaṭṭa, etc.,--are very much in the same state as he left them. And although some living scholars have tried to follow in his footsteps, as far as learning is concerned, they have never approached him in those qualities which are more essential to the discovery of truth than mere reading, viz., caution, fairness, and modesty. Two events remain still to be noticed before we close the narrative of the quiet and useful years which Colebrooke spent in England. In 1818 he presented his extremely valuable collection of Sanskrit MSS. to the East India Company, and thus founded a treasury from which every student of Sanskrit has since drawn his best supplies. It may be truly said, that without the free access to this collection--granted to every scholar, English or foreign--few of the really important publications of Sanskrit texts, which have appeared during the last fifty years, would have been possible; so that in this sense also, Colebrooke deserves the title of the founder of Sanskrit scholarship in Europe.