How sharp my regret I don’t have a higher-quality version of this cover, given how it exhibits one of my favorite visual tropes. It was painted by Walter Popp for the August 1953 issue of Startling Stories. Interior art in the issue includes this piece by Ed Emshwiller, illustrating Theodore Sturgeon’s “The Wages of Synergy,” which is about as symbolically representative of Erotic Mad Science as any piece of pulp art I have yet found.
This issue of Startling Stories is available to read and download at the Internet Archive.