The Structure and Distribution of Coral Reefs is a scientific book written by Charles Darwin in 1842. In this book, Darwin presents his observations and theories on the formation and distribution of coral reefs. He argues that coral reefs are not static structures but are constantly evolving and changing due to geological and biological processes.The book is divided into three parts. In the first part, Darwin describes the different types of coral reefs and the conditions that are required for their formation. He also discusses the different stages of reef formation and the role of coral polyps in this process.In the second part, Darwin presents his observations on the distribution of coral reefs around the world. He argues that the distribution of coral reefs is not random but is influenced by a variety of factors, including water temperature, depth, and the presence of other organisms.In the third part, Darwin discusses the implications of his theories for the study of geology and biology. He argues that the study of coral reefs can provide important insights into the history of the earth and the evolution of life on our planet.Overall, The Structure and Distribution of Coral Reefs is a seminal work in the history of science and a testament to Darwin's keen observational skills and groundbreaking theories. It remains an important reference for scientists and scholars interested in the study of coral reefs and their role in the ecology of our planet.Where the channel is narrow, the agency, which on unprotected coasts is most productive of sediment, namely the force of the breakers, is here entirely excluded, and the reef being breached in the front of the main valleys, much of the finer mud from the rivers must be transported into the open sea. As a current is formed by the water thrown over the edge of atoll-formed reefs, which carries sediment with it through the deep-water breaches.This scarce antiquarian book is a facsimile reprint of the old original and may contain some imperfections such as library marks and notations. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions, that are true to their original work.