Silk Silk Silk is a natural protein fiber, some forms of which can be woven into textiles. The protein fiber of silk is composed mainly of fibroin and is produced by certain insect larvae to form cocoons. The best-known silk is obtained from the cocoons of the larvae of the mulberry silkworm "Bombyx mori" reared in captivity (sericulture). The shimmering appearance of silk is due to the triangular prism-like structure of the silk fibre, which allows silk cloth to refract incoming light at different angles, thus producing different colors. Silk is produced by several insects, like silk worms but generally only
Mori, Hokkaido schools: Mori Middle School and Sawara Middle School. The town is home to six elementary schools. There are several empty elementary school buildings due to the declining population of Mori Machi. The most recent closings being Ishikura elementary school in 2017 and Akaigawa elementary school in 2011. The town of Mori is served by four post offices. The main post office is in the Miyukichō district, in close proximity to the Mori Town Hall. Keizō Kajiya (b. 1956), a graduate of Ashikaga Institute of Technology and mayor of the former town of Sawara, was elected mayor of Mori on October