The image is a stark black and white illustration, appearing to be a scientific or experimental diagram. It features a white, human-like figure silhouetted against a solid black background. The figure is stylized and somewhat abstract, with exaggerated features. It has a small head with what appear to be horns or pointed ears, a narrow torso, and long, slender limbs. The arms are raised and bent, with the hands splayed open. The legs are also slender and slightly bent, with pointed feet. The figure's overall shape is somewhat elongated and distorted, giving it an otherworldly or fantastical appearance. Below the image is a caption that reads 'Fig. 138. - Experiment on complementary colours.'