The Hunting of the Snark the illustrations needed three months to be complete. By the time Holiday had completed the sketches and sent them to Carroll, Carroll had already created a new fit requiring an illustration. They worked this way until Holiday had created nine illustrations as well as the front cover and the back cover of the book. Thus, among the ten illustrations shown below, one illustration is not by Henry Holiday. The "Ocean Chart" is typographic art whereas electrotypes made from Joseph Swain's woodblock engravings were used to print Henry Holiday's illustrations. There is no depiction of the Snark, nor of Boots. However,
Lewis Carroll early version of what today is known as Scrabble. He appears to have invented – or at least certainly popularized – the "doublet" (see word ladder), a form of brain-teaser that is still popular today, changing one word into another by altering one letter at a time, each successive change always resulting in a genuine word. For instance, CAT is transformed into DOG by the following steps: CAT, COT, DOT, DOG. The games and puzzles of Lewis Carroll were the subject of Martin Gardner's March 1960 Mathematical Games column in Scientific American. Other items include a rule for finding the