The cause and prevention of yellow fever at New Orleans and other cities in America / by E.H. Barton.
- Barton, Edward H.
- Date:
- 1857
Licence: Public Domain Mark
Credit: The cause and prevention of yellow fever at New Orleans and other cities in America / by E.H. Barton. Source: Wellcome Collection.
149/440 page 19
![that of March, and first showing the impress of what was to come. During jVaij, the maximum of the thermometer was 88—the Of May. minimum 60—the average 73.82, range 28—the average dew point 67.11—average of the barometer 30.237—average humidity .842—average amount of moisture in a cubic foot 7.601—the highest solar radiation 39—winds Southerly and Easterly, amount of rain 3.840—a largely increased combina- tion of injurious influences. The moisture had greatly increased with the high range of temperature, although the precipitation had been small, below the average of the montb—as the pre- ceding had been, eminently showing how erroneous it is to calculate the amount of moisture from the quantity of rain that falls, and the cause of the mistake that some of the communi- cants to the Commission have fallen into in describing the con- Moisture ihm- dition precedent and accompanying the existence of the epi- ^^^^^ demic, while on the same page, a few lines off, the evidences^ and effects of this moisture are pointed out—^in the extensive prevalence of mould; and a vegetable life that alone predomi- nates in very humid weather, and the existence of a stag- nant atmosphere, or such winds as are known to be solvent of a large amount of moisture. The high combination then of heat and moisture, with so small a precipitation, together with a most remarkable eleva- tion of solar radiation, greater than I had ever seen it, so early- even as January, (see chart,) assured me that the climatic in- fluences were very remarkable, and when I saw the filthy condition in which the city was—the great extent of expo- p , ~ -1 Grounds for sure 01 the ongmal sou oi the city—lor gas, water, and other the prediction purposes, the digging of the Carondelet Basin, the cleaning ofj],gepidem- out of canals, and the embankments and excavations for rail-jyi^y. road purposes, and the reflection on the fatal consequences that these had heretofore always brought on our city, with the chart A before me; this early connection of the atmos- pheric element with the physical showed, in the combination, a foreshadow of what was to come, and enabled me to give](https://iiif.wellcomecollection.org/image/b20402521_0149.jp2/full/800%2C/0/default.jpg)
