Report on the etiology and prevention of yellow fever . re (Penicilliumspores and micrococci); and in nearly every specimen the presence of epithelial cells,and occasionally of a fiber of cotton or linen, gave evidence that under the circum-stances such contamination was unavoidable. It is therefore believed that anyorganism developing in the blood of yellow fever, or of other diseases, collectedby the method described or by any similar method, can have no great significauceunless it is found to develop as a rule (not occasionally) in the blood of patients suf-fering from the disease in questi
Report on the etiology and prevention of yellow fever . re (Penicilliumspores and micrococci); and in nearly every specimen the presence of epithelial cells,and occasionally of a fiber of cotton or linen, gave evidence that under the circum-stances such contamination was unavoidable. It is therefore believed that anyorganism developing in the blood of yellow fever, or of other diseases, collectedby the method described or by any similar method, can have no great significauceunless it is found to develop as a rule (not occasionally) in the blood of patients suf-fering from the disease in question, and is proved by comparative tests not to developin the blood of healthy individuals obtained at the same time and by the samemethod. Tried by this test it must be admitted that certain fungi and groups of micrococci,shown in photographs taken from specimens of yellow fever blood collected at themilitary hospital aud preserved in culture cells, can not reasonably be supposed to bepeculiar to or to have any casual relation to this disease. PLATE 226 ETIOLOGY AND PREVENTION OF YELLOW FEVER. PLATE II. Fia. 1. Yellow fever blood; fifth day; fatal case. Photomlcrograpli made in Havanain 1879. X 1,450 diameters by Zeisss one-eigbteenth bom. oil immersionobjective and Tolless amplifier. Fig. 2. YeUow fever blood; first day; fatal case. Pbotomicrograpb made in Havanain 1879; same amplification as Fig 1. Fig. 3. Yellow fever blood; fiftb day; fatal case. Havana, 1879. Same amplifica-tion as Fig. 1. Fig. 4. Leucocyte in yellow fever blood kept in a culture cell for two days ; eighthday of sickness. Fatal case. Havana, 1879. X 650 diameters. Fig. 5. Leucocyte in yellow fever blood of eighth day ; fatal case (same as Fig. 3).Kept in culture cell for two days. X 650 diameters. lExtract from preliminary report of Havana Yellow Fever Commission to Kational Board of Health, submitted November 18, 1879.] The most important observation made relates to certain granules in the whitecorpusc
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