pamphlet. 5 pages (pp. 552-556) IN: The New York Medical Journal. vol. 71, April 14. 4to, modern wrappers. N.Y., 1900. First Edition. Whole issue offered entire.
Ashford found that nearly one-third of the deaths in Puerto Rico were due to hookworm infestation and the consequent anaemia. His work drew attention to the disease in Puerto Rico and led to a campaign for its extermination. GM 5361.