This sudden aphasia in old people is not uncommon, and may be due to several causes, that all in one way or other affect the so-called “speech centre” of the brain. As the “writing centre” is situated in the very near vicinity, it is not surprising that a lesion that affects one generally also affects the other. That Johnson’s right hand was not also paralysed at the same time is rather unusual, because the left side of the brain which controls the right side of the body also contains the speech centre; and it is supposed that it does so because man has for many thousands of years been accustomed to use his right hand more than his left, wherefore the left side of his brain would naturally be more ready to acquire new functions than the right, which only controls the comparatively awkward left hand. If this theory be true it would rather seem to show that men were accustomed to use their right hands long before they could speak; and this indeed is quite probable. The exact lesion would appear to have been that one of the cerebral arteries that supplied the left side of Johnson’s brain had for some reason been thrown into a state of spasm, and caused temporary softening of the brain owing to interference with its blood-supply. If an artery had actually burst on the site of a tiny aneurysm, as occasionally happens in cases of arteriosclerosis, the old man would not have recovered so soon, even temporarily. As it was, he seems to have recovered sufficiently by July to pay a visit to Dr. Langton at Rochester. The shock and terror induced by an attack of aphasia are generally very dreadful. I remember one elderly lady, who had always been of a most gentle and virtuous way of living, who one day suddenly sat up in bed with a scream, clutching at her bedclothes and at her throat and uttering meaningless noises like an ape. Twelve hours later she had for a time recovered her power of speech, and after lying musing for half an hour, said in her customary gentle voice, “I should like some fish; they say fish is good for the brain.” She had somewhere read that fish contains a large amount of phosphorus, which is supposed to be good for the brain—by patent-medicine vendors. But I shall never forget the scream of that poor lady, nor the look of terror that came over her gentle face. Johnson’s terror led him to write a prayer for his recovery, done in Latin verse. “The lines were not very good, but I knew them to be not very good, so concluded that I was not impaired in my faculties.” There you see at once the supreme passion of the man—Learning—coming out in what he thought to be the very article of death.