Helminthology Asmund Rudolphi, Otto Friedrich Bernhard von Linstow and Johann Gottfried Bremser started systematic scientific studies of the subject. The Japanese parasitologist Satyu Yamaguti was one of the most active helminthologists of the 20th century; he wrote the six-volume "Systema Helminthum". Helminthology Helminthology is the study of parasitic worms (helminths), while helminthiasis describes the medical condition of being infected with helminths. Helminthology studies the taxonomy of helminths and their effects on their hosts. The origin of the first compound of the word is the Greek "ἕλμινς" - helmins, meaning "worm". In the 18th and early 19th century there was wave of
Creatures of Light and Darkness technique "will probably baffle and infuriate" many readers. James Blish, however, found the novel "a flat failure," even though "Some parts are evocative in the authentic and unique Zelazny manner." He particularly faulted Zelazny's decision to end "Creatures" as a scene from a play, but "a scene which absolutely demands straightforward, standard narrative and for which the playscript is the worst possible choice." At the time the novel was published, Doubleday did not remainder its unsold science fiction when its sales cycle was complete; instead, it simply destroyed the unsold copies. After "Creatures" was issued in paperback, Doubleday mishandled its