American physical science applied sociologist Henry Careys' 1874 depiction of the "tree of knowledge", annotated to show a post 1954 "two cultures" perspective (see: two cultures department), wherein the branch of social science is located in close proximity to the the physical science branch of knowledge. [1]

“Man, the molecule, of society, is the subject of social science.”

“The distributions and partitions of knowledge are not like several lines that meet in one angle, and touch but in a point; but are like branches of a tree that meet in a stem, which hath a dimension and quantity of entireness and continuance before it comes to discontinuance and break itself into arms and boughs; therefore, it is good before we enter into the former distribution, to create and constitute one universal science by the name of Philosophia Prima, or Summary Philosophy, as the main or common way, before we come where the ways part and divide themselves.”