D’Arcy Thompson
D’Arcy Thompson was a biologist, a mathematician and a classicist.
He is primarily known for a single book—On Growth and Form—and indeed for a single chapter within it, on his ’theory of transformations’, which shows how the differences between the forms of related species can be represented geometrically.
References
Arthur W. D’Arcy Thompson and the theory of transformations. Nat Rev Genet. 2006 May;7(5):401-6. PMID: 16607399