It discharges its waters, by means of the Thioux canal, into the Fier, a tributary of the Rhone.
Fier das Verstcindniss der Gegenwart, 1859).
From Bellegarde) the Usses (left) joins the Rhone, while just below that village the Fier (left) flows in from the Lake of Annecy.
Below the junction of the Fier the hills sink on either side, the channel of the river widens, and one may say that it leaves the mountains for the plains.
Consult also the official Annual Reports on Alkali, &c., and, from 1864 onwards, Journal of the Society of Chemical Industry, Fischers Jahresberichte der chemischen Technologie, and Zeitschrift fier angewandte Chemie.