Henry Alleyne Nicholson

Born in Penrith, Cumberland, on September 11, 1844, Henry Alleyne Nicholson became a British palaeontologist and zoologist known both for research and for teaching. He studied at the University of Göttingen, where he earned a Ph.D. in 1866, and later at the University of Edinburgh, where he took further science and medical degrees.

Nicholson held academic posts in natural history and related fields at several universities, including Toronto, Durham, and St Andrews, before becoming Regius Professor of Natural History at the University of Aberdeen. Alongside his university work, he built a strong reputation as a specialist in fossil invertebrates and published extensively on subjects such as corals, bryozoans, graptolites, and stromatoporoids.

He was also a successful textbook author, producing practical works on zoology, paleontology, and geology that were widely read in the late 19th century. He died on January 19, 1899, but his writing still gives a vivid sense of the period when natural history was expanding into a modern scientific discipline.