In an interview with Sharon Blackie in Issue 4 of Earthlines, Robert Macfarlane says:
Caspar Henderson's The Book of Barely Imagined Beings is a marvelously inventive, witty, and ethically serious compendium-grimoire-spell book-dream vision, whose many virtues I can neither evoke nor exhaust here.In a capsule review for the Boston Globe, Kate Tutle calls it a "strange and lovely book."
Hilary at Vulpes Libris says Beings is:
wonderful to dip into...There are many pleasures to take from this book. As well as being erudite and beautifully and thoughtfully written, it is a gorgeous piece of book production as well... I absolutely loved it.