The Proof of It

This single-panel cartoon demonstrates the visual conventions emerging in early newspaper comics: a domestic interior rendered in cross-hatched ink, two figures in profile framed by a speech-balloon exchange, and a punchline hinging on wordplay. A man seated at table protests that milk is sour; his maid replies she served it deliberately to prove the absence of formaldehyde—a topical reference to food-safety scandals of the era. The composition uses spatial recession and facial caricature to convey character and situation at a glance, techniques newspaper cartoonists were refining into the visual language that would define the medium.