In 1874 he went to Radley and remained there four years, doing neither well nor ill, stifled rather in the ecclesiastical atmosphere of the school, caring little for games, and out of sympathy with the public school spirit. He therefore lived his own life, learnt to protect himself by ingenious tact and reserve, and read irregularly what he liked. Though not specially built for athletics he was by no means lacking in bodily arts and dexterities. When quite young he was a first rate billiard-player, a good skater, and at lawn tennis well above the average. His chief accomplishment was an odd one which never left him. During these early years he made a constant pastime of conjuring, and devoted to it much of his leisure and some of his business hours. He even gave elaborate entertainments in public, from the age of fourteen. On one occasion when he was only seventeen he was able to apply his skill to a really practical use. He was going by train to give a performance and happened to enter a compartment where there was a gang of card sharpers. They drew him into playing "Nap" with them; soon he began losing and knew that he was being cheated. They were using the ordinary conjuror's cards with plain white backs, of which he had a supply in his pocket. He soon found an opportunity of replacing their pack with one of his own, won back his losses with schoolboy satisfaction, and changed carriages at the first stopping-place, leaving the experts to solve the mystery for themselves. His self-possession in public and private, the mature and slightly initiate air that became less marked as he grew older, were probably due to these performances. They served in his real education. The intellectual side of what is usually common showman's art attracted him. The psychology of the conjuror's victim, amused and angry, straining all his wits on the wrong point; the festal atmosphere, or _Stimmung_, of inattentive youth and good temper necessary for success, the real poverty of intricate mechanical appliance compared with skill and patter--of these things he would talk in youth with an Edgar-Poe-like elaboration and solemnity, no doubt as well as any man in England. The best of these exhibitions was when Johnstone was professing to explain to a few friends a trick of his own doing. There came first, in long and well-cut sentences, a kind of metaphysic of conjuring; an account of those principles of delusion that were inapplicable in the present instance; exposure of the vulgar and obvious methods, which seemed to the crowd the same as those subtler ones which merely satisfied the conscience of the artist; and lastly, on the verge of the "explanation," a long parenthesis or a touch of coldness and abstraction, not to be interrupted, which ended, if at all, not in any explanation whatever, but in a last performance of the trick. Johnstone made a point of seeking acquaintance with the chief professors of manual illusion who visited England.