Among the issues the The Hunting of the Snark is about, one of them perhaps might be reasoning. There are several remedies against bad reasoning. One of them is clear thinking. That is what Kwame Anthony Appiah‘s Thinking It Through – An Introduction to Contemporary Philosophy is about. It also is available as eBook
See also: http://appiah.net/
As for The Hunting of the Snark, I think that this is the most important finding of my Snark hunt.
Usually elements borrowed by Henry Holiday from other artists are inconspicuously integrated into Holiday’s illustrations. Here is an exception. The monstrance-shaped tree is just a small element in John Martin’s The Bard. In Holiday’s illustration it is more prominent.
The Butcher reasoning with the Beaver.
This is the illustration (partially inspired by various works of other artists) to the chapter The Beaver’s Lesson.
(Bycatch from my Snark hunt: Doré probably recycled Doré.)
The word “snarking” already had been used in the year 1866.