instalments the funds with which to pay for the printing of Whitney's commentary. Whitney was professor at Yale; the editor is an alumnus of Yale and a teacher at Harvard; and Warren was an alumnus of Harvard. That the two Universities should thus join hands is a matter which the friends of both may look upon with pleasure, and it furnishes the motif for the dedication of this work. But I am glad to say that learning, as well as money, was at Mr. Warren's command for the promotion of science. Before his death there was issued his collection of translations from the Pāli which forms the third volume of this Series and is entitled "Buddhism in Translations," a useful and much-used book. Moreover, he has left, in an advanced state of preparation for press, a carefully made edition and a partial translation of the Pāli text of Buddhaghosa's famous encyclopedic treatise of Buddhism entitled "The Way of Purity" or Visuddhi-Magga. It is with gladness and hope that I now address myself to the arduous and happy labor of carrying Mr. Warren's edition through the press.
Next I desire to express my hearty thanks to my former pupil. Dr. Arthur W. Ryder, now Instructor in Sanskrit at Harvard University, for his help in the task of verifying references and statements and of reading proofs. He came to assist me not long after the close of his studies with Professor Geldner, when I had got through with a little more than one third of the main body of Whitney's commentary and translation. For books i.-vii., I had revised the manuscript and sent it to press, leaving the verification to be done with the proof-reading and from the proofsheets. Dr. Ryder's help began with the verification and proof-reading of the latter half of book vi.; but from the beginning of book viii., it seemed better that he should forge ahead and do the verification from the manuscript itself, and leave me to follow with the revision and the supplying of the missing portions and so on. His work proved to be so thoroughly conscientious and accurate that I was glad to trust him, except of course in cases where a suspicion of error was aroused in one or both of us. A few times he has offered a suggestion of his own; that given at p. 739 is so keen and convincing that greater boldness on his part would not have been unwelcome. To my thanks I join the hope that health and other opportunities may long be his for achieving the results of which his literary sense and scholarly ideals give promise.
Mrs. Whitney, upon turning over to me her husband's manuscript of this work, together with his other manuscript material therefor, was so kind as to lend me a considerable number of his printed books, some of which, in particular his copy of the Kāuçika Sūtra, have been a great convenience by reason of their manuscript annotations. It is a pleasure to be able to make to Mrs. Whitney this public expression of my thanks.
