Certainly they were like human beings, for their wings had now disappeared, and their attitude in walking was both erect and dignified….They averaged four feet in height, were covered, except on the face, with short and glossy copper-coloured hair, and had wings composed of a thin membrane, without hair, lying snugly upon their backs. We scientifically denominated them as Vespertilio-homo, or man-bat; and they are doubtless innocent and happy creatures, notwithstanding that some of their amusements would but ill comport with our terrestrial notions of decorum.

Tim Wu, The Attention Merchants, loc. 52