Fur trade marten furs could generate in international markets spurred a "fur fever" in which many Russians moved to Siberia as independent trappers. From 1585 to 1680, tens of thousands of sable and other valuable pelts were obtained in Siberia each year. The primary way for the Muscovite state to obtain furs was by exacting a fur tribute from the Siberian natives, called a "yasak". "Yasak" was usually a fixed number of sable pelts which every male tribe member who was at least fifteen years old had to supply to Russian officials. Officials enforced "yasak" through coercion and by taking hostages, usually
Filbert paintbrush as one of the main brushes. The filbert paintbrush derives from the shape it resembles, that of a hazelnut with its namesake. This word comes from the Old French filbert, coming from noix de (nut of) Philibert. Philibert was a saint, (who died in 684), whereby the ripening of the nut in August coincides with his feast day. Filbert paintbrush The Filbert paintbrush is a paintbrush used in artwork. It has a thick ferrule and hairs that are, on average, medium to long hairs in the shape of an oval. Filberts are particularly effective in blending work, usually of a