Book Maya (Connor) PODER EJECUTIVO FEDERAL ESTADOS UNIDOS MEXICANOS MEXICO Merida Yucatan Mexico. October 11, 1922. DEPARTAMENTO DE SALUBRIDAD PUBLICA DE MEXICO ---- JEFATURA DE LA CAMPAŅA CONTRA LA FIEBRE AMARILLA EN YUCATAN ---- MERIDA, YUC. MEX. My dear Doctor Carter: Mr. E.H. Thompson, Archeologist, has just left me after a pleasant half hour discussion on the probable use of the "Chultunes by the ancient Mayas. You will recall that Spinden in his article in the Worlds Work (December 1921) states that the "Chultuns" were for express purpose of conserving fresh water. Spinden's statement has been questioned by other Archeolo- gists who claim that the "Chultuns" were constructed for the purpose of storing corn. Another link in determining the presence of yellow fever amongst the Mayas would be forged if it can be proven that the "Chultunes" were used for storing fresh water as these ancient peoples would have unwittingly provided ideal breeding places for the only known vector of the causative agent of yellow fever. With this thought in mind I sought out Mr. Thompson, a well known student of Maya history and he tells me that the "Chultunes" were in his opinion used exclusively for conserving water for do- mestic use. He refers me to his article s The Chultunes of Labna. published by the Peabody Musuem, Harvard University, Cambridge Mass, from which Institution copies of his article can be secured for the asking. I am asking Miss Miller to request a copy for my files. You have undoubtedly seen Dr. White and he has related to you the factors relative to the outbreak of yellow fever in Panuco and Tampico. He told me that the infection was probably en- demic in Tampico, and had existed in a mild form for the eighteen mon -ths, amongst the children, when h we thought it had been eliminated It seemed to be when I was last in Tampico that the infection was not endemic in the city but in the region or area and we never found it out until it had reached epidemic proportions. One error in the Mexican campaign has been the failure to make a csreful epidemiologocal survey and study of vital statis- tics in the begining of the campaign. Doctor White started on this detail as soon as possible after taking hold of the work and the data collected will be very valuable for future guidance. The Mexican problem is quite different in many rep-ects from Panama or Guayaquil, in the former places there was only one center in each country to treat while here there are several and in Mexico the intercommunications are so complete that no part of the stegomyia infested area can be left untreated unless we are |