The Cidaridae is a book written by Hubert Lyman Clark and published in 1907. The book is a comprehensive study of the Cidaridae family of sea urchins. It contains detailed descriptions of the anatomy, morphology, and taxonomy of the various species within this family. The author also discusses the evolution and distribution of the Cidaridae, as well as their ecological and economic significance. The book is written in a scientific style and includes...