[Sidenote: 10. Tarre.] Likewise of Tarre they make a great quantitie out of their firre trees in the conntrey of Duyna and Smolensko, whereof much is sent abroad. [Sidenote: 11. Ribazuba.] Besides these (which are all good and substantiall commodities) they haue diuers other of smaller accompt, that are naturall and proper to that countrey: as the fish tooth (which they call Ribazuba) which is vsed both among themselues, and the Persians and Bougharians that fetch it from thence for beads, kniues, and sword hafts of Noblemen and gentlemen, and for diuers other vses. Some vse the powder of it against poison, as the Vnicornes horne. The fish that weareth it is called a Morse, and is caught about Pechora. These fish teeth some of them are almost 2. foote of length, and weigh 11. or 12. pound apiece. [Sidenote: 12. Slude.] In the prouince of Corelia, and about the riuer Duyna towards the North sea, there groweth a soft rocke which they call Slude. This they cut into pieces, and so teare it into thin flakes, which naturally it is apt for, and so vse it for glasse-lanthorns and such like. It giueth both inwards and outwards a clearer light then glasse, and for this respect is better then either glasse or horne: for that it neither breaketh like glasse nor yet will burne like the lanthorne. [Sidenote: 13. Saltpeter and brimstone.] Saltpeter in many places, as at Ouglits, Yaruslaue, and Vstiug, they make and some smal store of brimstone vpon the riuer Volgha, but want skil to refine it. [Sidenote: 14. Iron.] Their iron is somewhat brittle, but a great weight of it is made in Corelia, Cargapolia, and Vstiug Thelesna. Other mine they haue none gowing within the realme. [Sidenote: The strange beastes, fish, foule, &c., that breed in Russia.] Their beasts of strange kinds are the Losh, the Ollen, the wild horse, the beare, the woluering, or wood dog, the Lyserne, the Beauer, the Sable, the Martron, the black and dunne fox, the white Beare towards the sea coast of Pechora, the Gurnstale, the Laset or Mineuer. They haue a kinde of Squirrell that hath growing on the pinion of the shoulder bone a long tuft of haire, much like vnto feathers with a far broader taile than haue any other squirrels, which they moue and shake as they leape from tree to tree, much like vnto a wing. They skise a large space, and seeme for to flie withal, and therefore they cal them Letach Vechshe, that is, the flying squirrels. Their hares and squirrels in sommer are of the same colour with ours, in Winter the hare changeth her coate into milke white, the squirrel into gray, whereof cometh the Calaber.