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,
What the Tortoise Said to Achilles What the Tortoise Said to Achilles "What the Tortoise Said to Achilles", written by Lewis Carroll in 1895 for the philosophical journal "Mind", is a brief allegorical dialogue on the foundations of logic. The title alludes to one of Zeno's paradoxes of motion, in which Achilles could never overtake the tortoise in a race. In Carroll's dialogue, the tortoise challenges Achilles to use the force of logic to make him accept the conclusion of a simple deductive argument. Ultimately, Achilles fails, because the clever tortoise leads him into an infinite regression. The discussion begins by considering the following logical argument: