That is to say, every Buddha who appears on earth in a temporary human body—with the object of teaching men how to gain Nirvāṇa—exists also in an ideal counterpart, or ethereal representation of himself, in the formless worlds of meditation (p. 213). These ideal Buddhas are as numerous as the Buddhas, but as there are only five chief human Buddhas in the present age—Kraku-ććhanda, Kanaka-muni, Kāṡyapa, Gautama, and the future Buddha Maitreya—so there are only five corresponding Dhyāni-Buddhas:—Vairoćana, Akshobhya, Ratna-sambhava, Amitābha, and Amogha-siddha (sometimes represented in images as possessing a third eye). But this is not all; each of these produces by a process of evolution a kind of emanation from himself called a Dhyāni-Bodhi-sattva, to act as the practical head and guardian of the Buddhist community between the interval of the death of each human Buddha and the advent of his successor. Hence there are five Bodhi-sattvas—Samanta-bhadra, Vajra-pāṇi, Ratna-pāṇi, Padma-pāṇi (= Avalokiteṡvara), and Viṡva-pāṇi—corresponding to the five Dhyāni-Buddhas and to the five earthly Buddhas respectively. In Nepāl five corresponding female Ṡaktis or Tārā-devīs are named (see p. 216). It is remarkable that the Chinese pilgrims from the fifth to the seventh centuries, while often mentioning the Bodhi-sattvas, make no allusion to any of the Dhyāni-Buddhas—whence we may gather that Amitābha, though adopted into Indian Buddhism, was not actually worshipped in India at least as a personal god. In point of fact, it was only the Buddhism of the North which was not satisfied with the original triad of the Buddha, the Law, and the Monkhood. It, therefore, invented in addition five triads, each consisting of a Dhyāni-Buddha, a Dhyāni-Bodhi-sattva, and an earthly Buddha, though of these triads only one was of importance, namely, that consisting of Amitābha, Avalokiteṡvara, and the human Buddha, Gautama. But the Lalita-vistara does not mention this theory. It should be observed, too, that an important addition to the Mahā-yāna doctrine was made in certain Northern countries about the tenth century of our era. A particular sect of Buddhists in Nepāl, calling themselves Aiṡvarikas, propounded a theory of a Supreme Being (Īṡvara), to whom they gave the name of a ‘primordial Buddha’ (Ādi-Buddha), and who was declared to be the source and originator of all things, and the original Evolver of the Dhyāni-Buddhas, or Buddhas of contemplation, while they again were supposed to evolve their corresponding Dhyāni-Bodhi-sattvas. It is clear, of course, that this addition was a mere adaptation of Buddhism to Brāhmanism, and that the Ādi-Buddha was invented to serve as a counterpart of the One Universal Spirit Brahmă—the one eternally existing spiritual Essence, from which all existing things are mere emanations.