a little book, first published in 1820. This is entitled Biography of the Blind, or the Lives of such as have distinguished themselves as Poets, Philosophers, Artists, &c., and it is by James Wilson, "Who has been Blind from his Infancy." From the authorities given (they are stated in every case), it is obvious that these lives and anecdotes are available elsewhere, but probably in no other single volume is so much that is informing and entertaining on this one subject brought together.
The coin incident finds its warrant in the biography of Nicholas Saunderson, LL.D., F.R.S., who was born in Yorkshire in the year 1682. When about twelve months old he lost not only his sight but the eyes themselves from an attack of small-pox. In 1707 he proceeded to Cambridge, where he appears to have made some stir; at all events he was given his M.A. in 1711 by a special process and immediately afterwards elected Lucasian Professor of Mathematics. Of his lighter qualities Wilson says: "He could with great nicety and exactness perceive the smallest degree of roughness, or defect of polish, on a surface; thus, in a set of Roman medals he distinguished the genuine from the false, though they had been counterfeited with such exactness as to deceive a connoisseur who had judged from the eye. By the sense of touch also, he distinguished the least variation; and he has been seen in a garden, when observations were making on the sun, to take notice of every cloud that interrupted the observation, almost as justly as others could see it. He could also tell when anything was held near his face, or when he passed by a tree at no great distance, merely from the different impulse of the air on his face. His ear was also equally exact; he could readily distinguish the fourth part of a note by the quickness of this sense; and
