________________ 44 Introduction Thus in the Kosa we find six triads and fifteen pairs. Of these four triads and eight pairs have their parallels in the Pali Matikas. Almost the same pairs and triads are given, in the same order, in the Dipa and its Vritti. ' For both the Bhashya and the Vritti, the main purpose is to deal with the dharmas in accordance with these matrikas. All discussions on the doctrine valuable as they are from our point of view are treated as incidental. This account of the four major works on Abhidharma shows that the Yogachara and the Sarvastivada schools too had Matrikas, similar to the Pali Matikas. The.numbers of items of both pairs and triads varied in each school. It is probable that originally the matika list consisted of a few items, only of those which are included in all these four Abhidharma works. The following table shows the nurnber of items treated in the following three schools : Yogachara (Asm:) Vaibhashika (Kosa) Theravada (Dhs.) Triads 22 1100 excluding the Sattanta-matika 5 . 6 Pairs 22 Considering the overlapping character of the several pairs and triads in the Pali Matikas, it appears to us that the Vaibhashika list is more original and has suffered less additions. The Yogachara list is also nearer to the Vaibhashika list than to the Pali Matikas. Though as many as twentythree triads and a hundred pairs are given in the Pali Matikas, it should be noted that only the first traid, namely the kusala tika, has been fully expanded in the Dhamma-sangani. The 4 entire Chittuppada-kanda and even the Rupa-kanda (which is covered by the term abyakata dhamma) deal with the mind and matter, only with reference to the first tika. The Rupakanda has its own Matika, which consists not only of pairs and triads, but also of fours, fives, etc., up to tens, like the