An entertaining and elegantly written collection of discursive essays on natural history and evolution. The nature stories and the anecdotes about eccentric naturalists are interesting.
It has a 1980 original publication date. Perhaps because of this date there is very little about DNA and nothing about HLA and tissue-typing. I shall check his later books to see if he ever got up-to-date on these. (He died a month ago). He was concerned to defend his field as being real science against "haughty and high-riding mathematicians and experimentalists." In fact this sort of biology seems more akin to history and archeology than to hard science, but that adds to its readability rather than detracts from it.