W. G. (William Garland) Barrett

William Garland Barrett was an English Congregational minister connected with the London Missionary Society, and he spent part of his career as a missionary in Jamaica. Contemporary and archival records also show him as an energetic amateur naturalist, a side of his life that shaped the science writing he later published for ordinary readers.

He is best known as the author of Geological Facts; or, The Crust of the Earth, What It Is, and What Are Its Uses (1855). In that book, Barrett set out to make geology inviting rather than intimidating, explaining the structure and practical value of the earth's crust in language meant for non-specialists. The preface makes clear that the work grew out of classes he had taught, especially to young women, which gives the book a direct, conversational feel.

Barrett was also the father of the physicist William Fletcher Barrett and the artist Rosa Mary Barrett. Although only a small part of his writing is widely read now, he remains an appealing example of a Victorian author who moved comfortably between ministry, education, and science for general audiences.