DANGEROUS THOUGHTS"
SIR,—In the first paragraph of his review of Dangerous Thoughts Mr. Joad says that one of the essays is about John Wilkes. There is no reference to John Wilkes in the book. One of the essays is about Bishop Wilkins, who was associated with Boyle and Petty in founding the Royal Society. Pre- sumably Mr. Joad thinks they are the same. It is clear that he has not read the book he attacks sufficiently to notice even the titles. This is not surprising if what first attracted his attention was the passage in which his own writings are cited to illustrate Mr. Joad's ignorance of scientific matters, and unfitness to discuss them.
[Dr. Joad asks us to say that a too hasty reading, not of Mr. Hogben's book, but of his own proof, was responsible for his slip, for which he expresses his regret.—ED. The Spectator.]