Common bleak extracted from the scales of the common bleak, so-called "Essence Orientale" or "pearl essence", (used in making artificial pearls) which is crystalline guanine. Common bleak The common bleak ("Alburnus alburnus") is a small freshwater coarse fish of the cyprinid family. The body of the bleak is elongated and flat. The head is pointed and the relatively small mouth is turned upwards. The anal fin is long and has 18 to 23 fin rays. The lateral line is complete. The bleak has a shiny silvery colour; and the fins are pointed and colourless. The maximum length is approximately 25 cm. In
Bleak House, Broadstairs Bleak House, Broadstairs Bleak House (originally known as Fort House) is a prominent house on the cliff overlooking the North Foreland and Viking Bay in Broadstairs, Kent. It was built around 1801 and then substantially extended, doubling in size, in 1901. The house was the site of the North Cliff Battery and was used as a coastal station for observing maritime activity. The house is Grade II listed on the National Heritage List for England. Bleak House was originally called Fort House and was the residence of a captain of one of the two coastal forts guarding Broadstairs, the town