Its principal tributaries are the Gail on the right, and the Mdll, the Lieser, the Gurk with the Glan, and the Lavant on the left.
Distant from Llangefni, about 1770, were found human bones of a high antiquity, between Glan Hwfa and Fron, and at Capel, respectively.
The rivers in this fertile tract of country are the Rhine, Lauter, Queich, Speirbach, Glan and Blies.
Glan, a bank - Glanymor, Glandofan.
It is picturesquely situated on the river Glan, which is in communication with the Worther-see by the 3 m.
Nicols's, Glan-Thomson prisms or similar polarization apparatus are used as polarizers and analysers.