IV. We find likewise that the _Rèva_, which others very improperly call the _Ravì_ or _Revi_, flows down from the ridge of mountains called _Vindhya_. These are the _Vinidi Montes_ of Strabo and Ptolemy, which were seen at a distance by the troops of Alexander the Great. Hence there is reason to conjecture, with some degree of probability, that Alexander, though he crossed the _Rèva_, did not penetrate so far as the _Jamunà_. Had the case been otherwise, this river would have been mentioned, by historians, among those which Alexander’s army passed; for it was exceedingly well known to the ancients under the name of _Jomanes_. But, as they observe perfect silence in this respect, it may with certainty be admitted, that the Macedonian hero, whose deeds have been so highly extolled, saw and reduced to obedience only a very small part of India. V. The word _Sindhu_, in the Samscred language, signifies the sea; from which it appears, that this appellation does not properly belong to the whole of the river called the _Sindhu_, _Sandus_, _Indus_, and _Hendo_; and that it can be applied to it only where it discharges itself into the sea. In the old Brahmanic writings this river is called the _Rèva_; for towards the north east, in the latitude of 30° north, and the longitude of 34°, the _Rèva_ forms the principal stream of the _Sindhu_. It does not flow from Thibet, nor from the mountains _Imau_, _Parvada_, or _Parapomiso_, as some pretend, but from the _Vindhya_ mountains, lying in the latitude of 34°, and the longitude of 94°. These mountains, however, are to be found neither on De l’Isle’s map, nor in that of D’Anville. VI. In the last place, we here see that in the Samscred language the _Rèva_ is distinguished by several names, which geographers have considered as belonging to so many different rivers, and therefore they have mentioned a considerable number which never existed. Thus M. De l’Isle speaks of a river in the latitude of 25°, to which he gives the name of _Dimadee_. He has been led into this mistake by the corrupted orthography of the word _Namadà_, an appellation given to the _Rèva_, and which means that river alone. Such is the case when writers do not understand the languages of India, and are not able to procure accurate information by reading Indian works! The Samscred names of the principal Indian rivers may be found, however, in Biscoping’s dictionary. The _Rèva_, _Jamunà_, _Ganges_, _Sarayuvà_, and _Caveri_, are considered by the Indians as sacred; and, according to their belief, purify from their sins all those who bathe in them. The different kinds of vessels employed for navigation on the coast, and in the rivers of Malabar, are the following: