A pole vaulter in motion, algae, prehistoric footprints, human anatomy, solar eclipses, the Alps - images in scientific photographs can puzzle, startle and inspire thinking. This book presents a collection of photographs of science subjects that raised questions about catastrophe theory, human evolution and behaviour, tha nature of matter, and the place of our planet in universe. The contributors to this volume consider the history of these images, their technical genesis, and the questions of representation they may inspire. Mimi Cazort examines the conventions that governed the representation of scientific matter in prints and drawings prior to the invention and discovery of photography. Drawing on 19th-century images, Larry Schaaf illustrates a narrative of the first decades of photography. Ann Thomas shows how the search for pattern became a heuristic and aesthetic element early in the history of making scientific photographs. In another chapter, she explores the evolution of photography in astronomy. John McElhone describes a colour process - the Lippmann plate - and the context in which Gabriel Lippmann devised it at the turn of the 19th century. Contending that photographic representation altered the parameters of representation in medicine, and in complicated ways, Martin Kemp looks at the work of Galton, Batut, Morel, Diamond, Dagonet, and Londe. Marta Braun links pioneering work in the photographic representation of movement to that of Harold E. Edgerton in the 20th century.