I have scored this book with only 3 stars because although the text deserves a high 4, it is let down by the semi-transparent paper and the poor quality of many of the photographic figures.
Philip Ball is an excellent author in the field of popular science, and I always look forward to reading his next book. His "Bright Earth" is a classic, which I have re-read several times. In "Shapes: ..." the author has drawn together the formation of patterns in the animate and inanimate worlds, with a particular emphasis on development of pattern in animals. He writes in a clear and engaging style, but he seems to have gone a bit too far in not scaring the horses by avoiding technical details or formulae. These could have been put in an appendix, probably replacing the existing appendices which are relevant only to someone with access to a chem lab. Overall, I have learned a lot from this book, and I am glad that I have read it.
My principal whinge is that the author has been let down by his publisher. The paper is bright white but thin, so that the text, and particularly the images, show through to the other side. And those images ... it is only fair to say that there is a generous number of illustrations, but sadly many of the half-tone photos are of such low contrast or sharpness that it is difficult to make out what they represent (e.g. Figs 1.2, 1.6, 1.14b, 1.15b, and I'm only up to p 29). This is not an isolated problem, as the next book in the series is, if anything, worse. I dread to think what the paperback editions will be like.