Month by month through a year, Slack collects water from ordinary English ponds and examines it under the microscope. He describes the polyps, infusoria, rotifers, water-bears and polyzoa he finds, how to catch and keep them, and what their movements suggest about nerves and instinct, writing for the amateur who has only a moderate instrument.
A delightful Victorian invitation to microscopy, still a good guide to what lives in a jar of pond water. Download the free EPUB.