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 the Night that he played on. Simmons and Stanley, who have generally been dismissive of the band's post-1977 albums, considered Creatures to be one of their stronger efforts. The album tour began shortly after Christmas and spanned the first five months of 1983, with the band's itinerary focused entirely on North America (three concerts were also played in Brazil) in an attempt to rebuild their diminished US fanbase. However, the Creatures Tour proved to be a big failure than the last North American tour in 1979, with numerous half-empty arenas (Venues that the band had sold out or at least played to