INCENSE has been used in religious and magickal ceremonies since the dawn of time. Practically all the major world religions value its spiritual significance -yet it is still surrounded in mystery. A working definition is that an incense is a natural substance which has to be heated to a high temperature in order to release its perfume. An incense can be simply a pure resin, or an aromatic gum or can be a mixture of resins, gums and other scented materials.