Galton surveyed mental imagery via breakfast table visualization. Royal Society fellows overwhelmingly lack visual imagery. Scientific men report weakest imagery compared to general population. Upper-class men show deficient visualization faculties. Women report stronger imagery than men. Imagery ability varies extremely across individuals. Many respondents describe imagery as faint or absent. Galton distributed circulars to 100 men and 100 women. Intellectuals deny any power of visual representation. Poets and artists claim vivid imagery. Deficiency in imagery common among high intellects. Galton experienced weak imagery himself. Survey reveals bimodal distribution in imagery strength. No imagery reported by 30% of scientific men. General acquaintances show more imagery than scientists. Imagery faculty appears innate and heritable.