________________ PREFACE xiii graphs are of the Visvabharati Library. In many cases these are very illegible and in this connection I am very thankful to our Dge rgan, Mr. Bsod nams dros grub (Punyasiddhi), who helped me in reading them. My thanks are due to the Librarian, India Office, for his kindly lending to our Visvabharati the Xylograph of the commentary. Though it is of the same Narthang edition it is far better owing to the better quality of papers used therein. I have specially used it in the last two chapters. I am very grateful to my esteemed friend and colleague, Mr. Nandalal Basu, the Director of our Kala-bhavana, for his kindly reproducing the portraits of Aryadeva, Candrakirtti, and Suryakirtti, as found in the Xylographs, the first and the third being in Tsh and the second in I of Mdo of the Tanjur. I offer my hearty thanks also to my pupil, Mr. Prabhubhai Bhikhubhai Patel, for the help I have derived from him and specially for preparing the indexes. I content myself for the present with a short and preliminary Introduction reserving detailed discussion for the next volume, i.e. the first part containing the first seven chapters. Vidyabhavana, Visvabharati, January, 1931. - : VIDHUSHEKHARA BHATTACHARYA.
