Gilbert light experiments for boys . netting over the Bopening*. Use blackbackgrounds behind Aand B; this is impor-tant. You should alwaystry out your appa-ratus just before youuse it. Look at thewindow glass from Fig 69 How you arrange glass> book> pictures,the audience side, have and candles both lamps lighted, and the boy A will appear to be seated besideboy B. If A appears too low, tilt the glass toward A; if he ap-pears too high, tilt the glass toward B. If the glass is exactlyvertical, A and B will be at exactly the same Fig. 70. How to make a magic boxFrom Magical Experim
Gilbert light experiments for boys . netting over the Bopening*. Use blackbackgrounds behind Aand B; this is impor-tant. You should alwaystry out your appa-ratus just before youuse it. Look at thewindow glass from Fig 69 How you arrange glass> book> pictures,the audience side, have and candles both lamps lighted, and the boy A will appear to be seated besideboy B. If A appears too low, tilt the glass toward A; if he ap-pears too high, tilt the glass toward B. If the glass is exactlyvertical, A and B will be at exactly the same Fig. 70. How to make a magic boxFrom Magical Experiments, published by David McKay Co., Philadelphia 42 GILBERT BOY ENGINEERING Now have an assistant turn down lamp 1 and A will dis-appear, turn up lamp 1 and A appears again. Also turn light2 down and up and B disappears and reappears. These shows need five boys. One is the hypnotist, whostands out in front and gives the patter talk to the can wear a dress suit, mustache, tall hat, and so on, if hedesires. Two boys are needed as the hypnotism subjects, whooccupy chairs A and B, as required. The remaining two boysare needed to operate the lamps. You will invent all kinds of shows for yourselves and makeup your own patter talk, but we suggest a few that will makeplenty of fun. Show 1. To hypnotize a boy at a distance of ten feet and tomake him disappear and reappear. THE BOX IS BLACK ON THE INSIDE - WINDOW I
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