nd ordinary light, but a inserted between the blanks, and the latter are bound be made to fade and merge into the other. This illu- slice of tourmaline, which is transparent for ordinary together with ribbons. Another pretty effect may be sion box should make an interesting feature of the light, is… … glass, within a reasonable distance During the experiment, the main light should not from the eye and with plenty of come from more than one window. If this precaution THE GOLD FISH APPEAR AND DISAPPEAR AT THE TOUCH OF A SWITCH. light falling upon it. Upon re- be neglected, the relative amount of…
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![An illustration from [Manuscript scrapbook of magic tricks], [1902-1919] (1902)](https://img.insideoutlibrary.com/img/200/locbook-loc_2010713028-535-1.webp)
