We now come to the part played by the Ligurians. In their language they called the alder-tree that grows along the banks of so many rivers, _alisos, alsia_ or _alison_. They gave this name to a number of streams; Alzon, Alzou, Alzau, Auzon, Auzonne, Auzonnet, Arzon, Auze, Auzenne, Auzelle, Auzotte, Auzette, Auzigue, Auzolle, Auzone,--all of which would signify the rivers of the alder-trees. There would also be left to be explained the origin of names ending in _enque_, such as Allarenque, Laurenque, Durenque, Virenque, but it is not known what they mean. Finally, one could not deny to the Ligurians the name Ligoure, which seems to be the name of the people itself. The Aude and the Orb probably owe their designation to the Phoenician settlers; the second of these is perhaps Greek. With the Celtic period the etymologies become a trifle less uncertain. The Celtic word for water, _dour_, is clearly found in the Dourbie, the Dourdene and the Dourdèze, the Dourdon, the Dore and the Doire. Another Celtic name for water, _esca_ is seen in the Ouche, the Essonne. They called a river _avar_; hence, the Abron, the Jabron, the Aveyron, the Arveiron, the Auron; hence probably also the Eure, the Auterne, the Authre, the Automne, the Autruche. _Aven_ means river in the present Breton dialect; now, we find rivers called: Avène, Avon, Avègne, Avignon. From _glanos_, meaning brilliant, gleaming, are perhaps derived the Gland, the Glane; from _vernos_, alder-tree, they have like the Ligurians christened many rivers: the Vern, the Vernaison, the Vernazon; from _der_, oak, came the _Dère_. It should be added that all these words came down to us through the Latin form before acquiring their French form. Thus _Bièvre_ and its derivatives Beuvron, Brevenne, Brevonne, derive from the Latin _bibrum_, itself borrowed from a Celtic word meaning beaver. Is it to the Gauls or the Romans that we owe the names Dive, Divette, Divonne? Does this mean here the fairy, or the divine one? It is difficult to ascertain. There were great resemblances between the tongues.