This chapter is the first of two on blood as a figure for kinship and species identity in the nineteenth century. It begins with the history of bloodletting and blood transfusion in the period, and documents the emergence in the second half of the century of an imaginary species body, whose individual members are characterized by their propensity to save or waste blood from the common supply. The idea of a collective body sharing a common blood is traced in a series of texts on bloodshed and blushing, including Alfred Tennyson’s “Maud,” William Morris’s “The Defense of Guinevere,” Christina Rossetti’s “The Convent Threshold,” D. G. Rossetti’s “Jenny,” and Darwin’s Expression of the Emotions in Man and Animals.