This small river now loses itself in the sands of the desert, but the evidence of ancient river-beds appears to favour the conclusion that it was originally a tributary of the Çutudrī (Sutlej). It is therefore not improbable that in Vedic times it reached the sea, and was considerably larger than it is now. Considering, too, the special sanctity which it had already acquired, the laudations supposed to be compatible only with the magnitude of the Indus may not have seemed too exaggerated when applied to the lesser stream. It is to be noted that the Dṛishadvatī, the “stony” (now Ghogra or Ghugger), in the only passage in which the name occurs in the Rigveda, is associated with the Sarasvatī, Agni being invoked to flame on the banks of these rivers. This is perhaps an indication that even in the age of the Rigveda the most easterly limit of the Indus river system had already acquired a certain sanctity as the region in which the sacrificial ritual and the art of sacred poetry were practised in the greatest perfection. There are indications showing that by the end at least of the Rigvedic period some of the Aryan invaders had passed beyond this region and had reached the western limit of the Gangetic river system. For the Yamunā (now Jumna), the most westerly tributary of the Ganges in the north, is mentioned in three passages, two of which prove that the Aryan settlements already extended to its banks. The Ganges itself is already known, for its name is mentioned directly in one passage of the Rigveda and indirectly in another. It is, however, a noteworthy fact that the name of the Ganges is not to be found in any of the other Vedas.

The southward migration of the Aryan invaders does not appear to have extended, at the time when the hymns of the Rigveda were composed, much beyond the point where the united waters of the Panjāb flow into the Indus. The ocean was probably known only from hearsay, for no mention is made of the numerous mouths of the Indus, and fishing, one of the main occupations on the banks of the Lower Indus at the present day, is quite ignored. The word for fish (matsya), indeed, only occurs once, though various kinds of animals, birds, and insects are so frequently mentioned. This accords with the character of the rivers of the Panjāb and Eastern Kabulistan, which are poor in fish, while it contrasts with the intimate knowledge of fishing betrayed by the Yajurveda, which was composed when the Aryans had spread much farther to the east, and, doubtless, also to the south. The word which later is the regular name for “ocean” (sam-udra), seems therefore, in agreement with its etymological sense (“collection of waters”), to mean in the Rigveda only the lower course of the Indus, which, after receiving the waters of the Panjāb, is so wide that a boat in mid-stream is invisible from the bank. It has been noted in recent times that the natives in this region speak of the river as the “sea of Sindh;” and indeed the word sindhu (“river”) itself in several passages of the Rigveda has practically the sense of “sea.” Metaphors such as would be used by a people familiar with the ocean are lacking in the Rigveda. All references to navigation point only to the crossing of rivers in boats impelled by oars, the main object being to reach the other bank (pāra). This action suggested a favourite figure, which remained familiar throughout Sanskrit literature. Thus one of the poets of the Rigveda invokes Agni with the words, “Take us across all woes and dangers as across the river (sindhu) in a boat;” and in the later literature one who has accomplished his purpose or mastered his subject is very frequently described as “having reached the farther shore” (pāraga). The Atharva-veda, on the other hand, contains some passages showing that its composers were acquainted with the ocean.

Mountains are constantly mentioned in the Rigveda, and rivers are described as flowing from them. The Himālaya (“abode of snow”) range in general is evidently meant by the “snowy” (himavantaḥ) mountains which are in the keeping of the Creator. But no individual peak is mentioned with the exception of Mūjavat, which is indirectly referred to as the home of Soma. This peak, it is to be inferred from later Vedic literature, was situated close to the Kabul Valley, and was probably one of the mountains to the south-west of Kashmir. The Atharva-veda also mentions two other mountains of the Himālaya. One of these is called Trikakud, the “three-peaked” (in the later literature Trikūṭa, and even now Trikōta), through the valley at the foot of which flows the Asiknī (Chenab). The other is Nāvaprabhraṃçana (“sinking of the ship”), doubtless identical with the Naubandhana (“binding of the ship”) of the epic and the Manoravasarpaṇa of the Çatapatha Brāhmaṇa, on which the ship of Manu is said to have rested when the deluge subsided. The Rigveda knows nothing of the Vindhya range, which divides Northern India from the southern triangle of the peninsula called the Dekhan;[2] nor does it mention the Narmadā River (now Nerbudda), which flows immediately south of and parallel to that range.

From these data it may safely be concluded that the Aryans, when the hymns of the Rigveda were composed, had overspread that portion of the north-west which appears on the map as a fan-shaped territory, bounded on the west by the Indus, on the east by the Sutlej, and on the north by the Himālaya, with a fringe of settlements extending beyond those limits to the east and the west. Now the Panjāb of the present day is a vast arid plain, from which, except in the north-west corner at Rawal Pindi, no mountains are visible, and over which no monsoon storms break. Here there are no grand displays of the strife of the elements, but only gentle showers fall during the rainy season, while the phenomena of dawn are far more gorgeous than elsewhere in the north. There is, therefore, some probability in the contention of Professor Hopkins, that only the older hymns, such as those to Varuṇa and Ushas, were composed in the Panjāb itself, while the rest arose in the sacred region near the Sarasvatī, south of the modern Ambāla, where all the conditions required by the Rigveda are found. This is more likely than the assumption that the climate of the Panjāb has radically changed since the age of the Vedic poets.

That the home of the Aryans in the age of the Rigveda was the region indicated is further borne out by the information the poems yield about the products of the country, its flora and fauna. Thus the soma, the most important plant of the Rigveda, is described as growing on the mountains, and must have been easily obtainable, as its juice was used in large quantities for the daily ritual. In the period of the Brāhmaṇas it was brought from long distances, or substitutes had to be used on account of its rarity. Thus the identity of the original plant came to be lost in India. The plant which is now commonly used is evidently quite another, for its juice when drunk produces a nauseating effect, widely different from the feeling of exhilaration dwelt on by the poets of the Rigveda. Nor can the plant which the Parsis still import from Persia for the Haoma rite be identical with the old soma. Again, rice, which is familiar to the later Vedas and regarded in them as one of the necessaries of life, is not mentioned in the Rigveda at all. Its natural habitat is in the south-east, the regular monsoon area, where the rainfall is very abundant. Hence it probably did not exist in the region of the Indus river system when the Rigveda was composed, though, in later times, with the practice of irrigation, its cultivation spread to all parts of India. Corn (yava) was grown by the tillers of the Rigveda, but the term is probably not restricted, as later, to the sense of barley.

Among large trees mentioned in the Rigveda, the most important is the Açvattha (“horse-stand”) or sacred fig-tree (Ficus religiosa). Its fruit (pippala) is described as sweet and the food of birds. Its sacredness is at least incipient, for its wood was used for soma vessels, and, as we learn from the Atharva-veda, also for the drill (later-called pramantha) employed in producing the sacred fire. The latter Veda further tells us that the gods are seated in the third heaven under an Açvattha, which may indeed have been intended in the Rigveda itself by the “tree with fair foliage,” in whose shade the blessed revel with Yama. This tree, now called Peepal, is still considered so sacred that a Hindu would be afraid to utter a falsehood beside it. But the Rigveda does not mention at all, and the Atharva-veda only twice, the tree which is most characteristic of India, and shades with its wide-spreading foliage a larger area than any other tree on the face of the earth—the Nyagrodha (“growing downwards”) or banyan (Ficus indica). With its lofty dome of foliage impenetrable to the rays of the sun and supported by many lesser trunks as by columns, this great tree resembles a vast temple of verdure fashioned by the hand of Nature. What the village oak is in England, that and much more is the banyan to the dwellers in the innumerable hamlets which overspread the face of agricultural India.

Among wild animals, one of the most familiar to the poets of the Rigveda is the lion (siṃha). They describe him as living in wooded mountains and as caught with snares, but the characteristic on which they chiefly dwell is his roaring. In the vast desert to the east of the Lower Sutlej and of the Indus, the only part of India suited for its natural habitat, the lion was in ancient times no doubt frequent, but he now survives only in the wooded hills to the south of the peninsula of Gujarat. The king of beasts has, however, remained conventionally familiar in Indian literature, and his old Sanskrit designation is still common in Hindu names in the form of Singh.

The tiger is not mentioned in the Rigveda at all, its natural home being the swampy jungles of Bengal, though he is now found in all the jungly parts of India. But in the other Vedas he has decidedly taken the place of the lion, which is, however, still known. His dangerous character as a beast of prey is here often referred to. Thus the White Yajurveda compares a peculiarly hazardous undertaking with waking a sleeping tiger; and the Atharva-veda describes the animal as “man eating” (purushād). The relation of the tiger to the lion in the Vedas therefore furnishes peculiarly interesting evidence of the eastward migration of the Aryans during the Vedic period.

Somewhat similar is the position of the elephant. It is explicitly referred to in only two passages of the Rigveda, and the form of the name applied to it, “the beast (mṛiga) with a hand (hastin),” shows that the Rishis still regarded it as a strange creature. One passage seems to indicate that by the end of the Rigvedic period attempts were made to catch the animal. That the capture of wild elephants had in any case become a regular practice by 300 B.C. is proved by the evidence of Megasthenes. To the Atharva- and the Yajur-vedas the elephant is quite familiar, for it is not only frequently mentioned, but the adjective hastin, “possessing a hand” (i.e. trunk), has become sufficiently distinctive to be used by itself to designate the animal. The regular home of the elephant in Northern India is the Terai or lowland jungle at the foot of the Himālaya, extending eastward from about the longitude of Cawnpore.

The wolf (vṛika) is mentioned more frequently in the Rigveda than the lion himself, and there are many references to the boar (varāha), which was hunted with dogs. The buffalo (mahisha), in the tame as well as the wild state, was evidently very familiar to the poets, who several times allude to its flesh being cooked and eaten. There is only one reference to the bear (ṛiksha). The monkey (kapi) is only mentioned in a late hymn (x. 86), but in such a way as to show that the animal had already been tamed. The later and ordinary Sanskrit name for monkey, vānara (“forest-animal”), has survived in the modern vernaculars, and is known to readers of Mr. Rudyard Kipling in the form of Bunder-log (“monkey-people”).