The fifteenth volume of The Correspondence of John Tyndall contains 466 letters covering the period from November 1875 to December 1877.Tyndall was by now an established man of science with a far-reaching reputation.The most significant work he undertook in this period involved his experiments on spontaneous generation and his consulting for Trinity House on lighthouse illuminations and sound-signaling.Alongside these projects, he married Louisa Hamilton in a small ceremony in London on February 29, 1876.This event offers a brief respite from the intense scientific and technical communications that dominate his life in the mid-1870s, and subsequent letters reveal his newfound domestic happiness.