 Spencer's 1850 book "Social Statics" shows Comtean as well as Victorian concern for social order.Yet whereas Comte's social science was a social physics, as it were, Spencer would instead take biology—via Darwinism, so called, which arrived in 1859—as the model of science, a model for social science to emulate.Spencer's functionalist-evolutionary account identified social structures as "functions" that adapt, analysis of which would explain social change.