Enquire within upon everything

63. Metagram, a riddle in which the change of the initial letter produces a series of words of different meanings; from meta, implying change, and gramma, a letter. Thus: I cover your head; change my head, and I set you to sleep; change it again and again, and with every change comes a new idea.--Cap, Nap, Gap, Sap, Hap, Map, Lap, Pap, Rap, Tap. This kind of riddle is also known as word-capping. [GUNPOWDER MADE BY A MONK AT COLOGNE A.D.1330.] 64. Palindrome, from the Greek palin-dromos, running back again. This is a word, sentence, or verse that reads the same both forwards and backwards--as, madam, level, reviver; live on no evil; love your treasure and treasure your love; you provoked Harry before Harry provoked you; servants respect masters when masters respect servants. Numerous examples of Palindrome or reciprocal word-twisting exist in Latin and French; but in English it is difficult to get a sentence which will be exactly the same when read either way. The best example is the sentence which, referring to the first banishment of the Great Napoleon, makes him say, as to his power to conquer Europe: "Able was I ere I saw Elba." 65. Puzzles vary much. One of the simplest that we know is this: Take away half of thirteen and let eight remain. Write XIII on a slate, or on a piece of paper--rub out the lower half of the figures, and VIII will remain. Upon the principle of the square-words, riddlers form Diagonals, Diamonds, Pyramids, Crosses, Stars, &c. These specimens will show their peculiarities: