1862. The author's intent in this book was to disseminate to the public a more correct and extended knowledge of blindness, and its effects upon mental and physical development. It was their hope to remove some of the most formidable obstacles that hedge up the way of usefulness and independence, for all who are placed in this condition; a condition to which every person is exposes. This subject is one of which so many false notions that these writers deemed it expedient to give the facts in such connections to best guard against being misunderstood.