Sketch with Notations, July 1868

This working sketch reveals an artist's process of capturing atmospheric effects and landscape elements. Loose gestural marks define horizon lines, water surfaces, and sky conditions, with handwritten notes identifying key features—"warm glow," "gray," "play"—to guide later composition. The rapid, abbreviated notation style typical of field studies demonstrates how nineteenth-century landscape painters translated observed phenomena into visual records, later developed into finished works. Such sketches formed the essential bridge between direct nature study and studio painting, preserving immediate impressions of light, weather, and topography that might otherwise be lost to memory.