Caption:
Circlet of hooks on a scolex (the anterior, headlike segment of a tapeworm, which has suckers or hooks for attachment). Magnification: 150x. Photomicrograph made by Arthur E Smith in the early 1900s, using a combined microscope and camera. In 1904, the Royal Society in London exhibited a series of Smith's photomicrographs to the public. They were later published in 1909 in a book called "Nature Through Microscope & Camera." They were the first examples of photomicroscopy many had ever seen.