Chapter 5 considers the Indic divine twins, the Aśvins (Aśvínā), or Nāsatyas (Nā́satyā), their association with the Indic Dawn goddess Uṣas, and their place in the Indic Soma cult. Discussion then shifts to the kingdom of Mitanni in Syro-Mesopotamia, a place into which Indic culture was introduced as Indo-Iranian peoples migrated southward through Asia, as also at Nuzi. There is good lexical evidence for the presence of a Soma cult in Mitanni, and Soma-cult ideas appear to have spread out of Mitanni, through Kizzuwatna, into the Luvian milieu of western Asia Minor, where such ideas would almost certainly have been encountered by resident Mycenaean Greeks, intermingled biologically, socially, culturally, and linguistically with Luvian populations. With that spread certain elements of Soma-cult ideology were mapped onto Anatolian cult structures.

Chapter 1 examines Pylos tablet Tn 316 in depth, giving particular attention to the Linear B forms spelled po-re-na, po-re-si, and po-re-no-, and related Sanskrit forms, and to the especial closeness of post-Mycenaean Aeolic to ancestral Helleno-Indo-Iranian in regard to this matter.

Exploration of the mythic concept of Aia, region of the rising sun, and its Hurrian and Luvo-Hittite background, its introduction to European Mycenaean Greeks by the Ur-Aeolians (Ahhiyawans) of Anatolia, and Aeolian Argonautic elaborations.

The first occurrences of the onomastic formula ‘Zeus Helios great Sarapis’ belongs to the reign of Trajan. Appearing in the military and economic context of the quarries of the Egyptian eastern desert, this divine name associates, in a single henotheistic entity, the great gods of Egypt (Amon-Ra-Helios), the Greco-Roman world (Zeus-Iuppiter) and Alexandria (Sarapis), giving pre-eminence to the latter. The iconographic translation of this theological evolution can be found in the provincial coinage of Alexandria during the Antonine period.