‘The Doctrine of Signatures’ started with the idea that God has marked everything he created with a sign (signature). The sign showed the purpose for the creation of the item. The ‘Doctrine of Signatures’ was promulgated by the writings of Jakob Böhme (1575–1624), a shoemaker in Görlitz, Germany, who had a profound mystical vision in which he saw a relationship between God and man that caused h...

Black foot disease is a serious disease of grapevine crops in most areas where vines are grown. Mainly two species of Cylindrocarpon, C. destructans and C. macrodidymum, are associated with this disease. Recent studies have revealed a tremendous molecular variation within the former but only slight molecular variation within the latter, indicating that C. destructans presents a complex of sever...