The Shipley Collection of Scientific Papers, Volume 258

adults age-groups Ancylostoma braziliense Ancylostoma duodenale average hemoglobin average number boys Brazil braziliense campaign caninum cent ceylanicum Chart chenopodium coffee coolies cultures defecate degree of infection dogs dorsal rays egg counts egg output eggs per gram experiments factors Faria Federated Malay female worms field laborers Fiji formed feces heavily infected hemoglobin hemoglobin index hook hookworm disease hookworm eggs hookworm infection hookworms harbored human infestation Ilha do Governador indices individuals infected with hookworms infective larvae International Health Board intestine Java kampongs large numbers larvæ larval index latrines living Looss Malaya males mass treatment mushy Necator americanus number of hookworms number of worms parasite Paulo percentage pigs places plantation Porto Rico re-infection reduced São Paulo showed soil infestation soil pollution species stools studies suillus Table Tamil tion tooth ventral villages women worm counts worm index worms harbored