Book excerpt: For students and alumni, their families, Cambridge locals and for lovers of private gardens, Tim Richardson's book on the most exquisite gardens in and around the university of Cambridge's colleges combines brilliant research and elegant prose with stunning photography by Clive Boursnell. Following on the heels of Oxford College Gardens, this book invites an armchair appreciation of the history, horticulture and atmosphere that these hallowed gardens provide. The gardens are as rich and varied as the colleges themselves, often set within stunning architecture, and include formal quadrangles, naturalistic planting, walled gardens, rooftop oases, productive plots and watermeadows as well as the private spaces enjoyed exclusively by the college masters, porters and fellows.