of the Reeling Station from east to west with a length of 186 meters followed by a 90-degree bend and 135 meter extension southward to the nearby Kabura River. It is regarded as important architecturally as sewers incorporating Western architectural styles were rarely found outside the treaty ports at this time. Director's Residence (Important Cultural Property) - Also known as the Brunat Mansion. Completed in 1873, this one-story timber-framed brick building with a hipped roof was the residence for the Brunat family. The building has a floor area of 918.6 square meters, and as L-shaped, with dimensions of 33 meters east-to-west and 32.5 meters north-to-south. Due to its size, when Brunat returned to France in 1879, it was used to a school for workers afterwards. Although the interior was subsequently modified accordingly, the exterior is largely unchanged. Dormitory for French Female Instructors (Important Cultural Property) - Completed in 1873, this building was also known as " Building No. 2" and was another half-timbered brick a two-story building, and a hipped and tiled roof. It measures 20.1 by 17.4 meters and was intended to house the four women instructors Brunat hired in France to teach his Japanese women workers. However, one of the four, Marie Charet (age 18) left Japan in October 1873 due to illness. Clorinde Vielfaure and Louise Monier (age 27) also became ill and left in March 1874. The remaining instructor, Alexandrine Vallent (age 25) did not want to be left alone, and also departed in October 1873. The building later became used as a dormitory for company officials, and as a dining room. Inspector's House (Important Cultural Property) - Completed in 1873, this building was also known as "Building No. 3" and was another half-timbered brick a two-story building, and a hipped and tiled roof located to the east side of the East Cocoon Warehouse. It was originally the dormitory for the male technicians Brunat hired in France. The names of Justin Bellen (29 years old) and Paul Edgar Puller, and Edgar Prat (23 years old) are known; Prat was dismissed on October 30, 1873, because he went to Yokohama without permission. Several other technicians came at different times. An old map of the facility shows "Building No. 4" and "Building No. 5" in similar size and style of construction, but these buildings do not survive. In addition to the above structures, the Main Gatehouse of the