Note 196 — Chapter XIV

Among these, besides the celebrated speaking head, the account of which is too legendary to be depended on, we must reckon the mode of rendering sensible the phenomena of an earthquake, which he describes in his book on meteors, and which finds a place in most modern works on popular science; his automata made to move by means of mercury according to the method of Chinese toys; and the so-called magic cup, which is still preserved in the Museum of Cologne.