This is an anatomical drawing of the blood vessels around the heart, but it’s odd to me how much it looks like a simple drawing of a heart, a Valentines heart, with wings. The colored vessels are permanent, the text says, and the diagram appeared in a chapter on development of the heart. Maybe the Valentines heart is a potential heart, a heart not yet made. Or maybe it’s just wishful thinking.
I found this in Quain’s Anatomy (1898) on archive.org.
Happy Easter to those who observe.