Very little, as it is known, remains in Sanskrit of the literary activity of Vasubandhu. If we except some kārikās of the Abhidharma-kośa, we have nothing else than the Viṃśikā and the Triṃśikā, recently edited by Sylvain Lévi. I may add that the Trisvabhāva-kārikā has also been found in Nepal, and copies are with the French Sanskritist and with me. I shall also mention the fragments of the vṛtti upon the Madhyānta-vibhaṅga (or vibhāga) by Maitreya, incorporated in the ṭīkā of Sthiramati, which is being edited by me and Vidhusékhara śāstrī from the Nepalese manuscript. It will, therefore, be of interest to Buddhist scholars and to Indologists in general to see here published another short, but not insignificant, fragment from the pen of the same ācārya, viz. the Pratītya-samutpāda-vyākhyā, a commentary upon the Pratītya-samutpāda-sāūtra referred to in the discussion of this same subject in the Abhidharma-kośa (Bkaḥ-ạgyur, Mdo, xviii, 11).