Materialism and modern physiology of the nervous system
A late nineteenth-century physiology treatise by William Hanna Thomson, published in New York by G.P. Putnam's Sons in 1892, arguing about mind and body and the brain for a general scientific readership. The four pictures are dorsal views of brains from different animal species, drawn in fine graded pencil or crayon with lettered labels for brain regions and the medulla at the base. A designer might take the soft tonal shading, the ovoid, lobed forms and the small leader-line lettering as a model for scientific diagram style.
