Amherst, published a critique of Kettlewell's work. Based on his experiments between 1965 and 1969, he concluded that it was not possible to reproduce Kettlewell's results, and said that birds showed no preference on moth on either black or white tree trunks. He suggested that Kettlewell had trained the birds to pick moths on tree trunks to obtain desired results. Michael Majerus's 1998 book Melanism: Evolution in Action is an adaptation of Kettlewell's The Evolution of Melanism, which discussed criticisms of Kettlewell's original experimental methods. When the biologist Jerry Coyne reviewed this book in Nature, he stated that the most serious problem was that only two peppered moths had been found on tree trunks. He also wrote that the white moths had increased in numbers before the lichen had returned and that Kettlewell's findings of moths choosing matching backgrounds had not been replicated in later experiments. Coyne compared his reaction to "the dismay attending my discovery, at the age of 6, that it was my father and not Santa who brought the presents on Christmas Eve". He concluded that "for the time being we must discard Biston as a well-understood example of natural selection in action, although it is clearly a case of evolution. There are many studies more appropriate for use in the classroom" and that further studies of the animal's habits were needed. Contrary to this review, Majerus had stressed that the basic findings from that work were correct, and that differential bird predation of polluted environment "is the primary influence of the evolution of melanism in the peppered moth". Coyne's statement that only two peppered moths had been found on tree trunks was incorrect, as the book gives the resting positions of 47 peppered moths Majerus had found in the wild between 1964 and 1996; twelve were on tree trunks (six exposed, six unexposed), twenty were at the trunk/branch joint, and fifteen resting on branches. Majerus found that the review did not reflect the factual content of the book or his own views, and cited an assessment by the entomologist Donald Frack that there was essentially no resemblance between the book and Coyne's review, which appeared to be a summary of the Sargent et al. paper rather than Majerus's book. The review was subsequently picked up by the journalist Robert Matthews, who wrote an article for The Sunday Telegraph, 14 March 1999, claiming that "the rise and