The monograph gives a general description of essential oil plants, methods for producing essential oils and spicy aromatic substances, their use in industry and medicine, as well as a brief description of 144 types of Far Eastern ether carriers (morphology, phenology, distribution, content of essential oils, use and conditions of preparation). The appendix contains tables of the distribution of essential oils by plant organs, the use of essential oil plants in industries and a list of unexplored aromatic plants. The book can serve as a manual for biology students, pharmacists, and chemical technologists; a practical guide and reference for workers in the food, perfume, medical and distillery industries. It contains information that can help in the procurement and processing of essential oil raw materials and in the selection of one or a group of plants for practical use or further study.