This second group may be divided into a-Barbaloins, obtained from Barbadoes aloes, and reddened in the cold, and Barbaloins, obtained from Socotrine and Zanzibar aloes, reddened by ordinary nitric acid only when warmed, or by fuming acid in the cold.
He reddened and turned away.
When Rostov met Sonya in the drawing room, he reddened.
Her face warmed and reddened beneath the scrutiny.
While she wasn't crying, she was biting her lip against doing so, and kept blinking her reddened eyes.