An essay on yellow fever : comprising the history of that disease, as it appeared in the island of Antigua in the years 1835, 1839, & 1842. with an appendix continuing the history to 1853 / by Thomas Nicholson.

  • Nicholson, T. J.
Date:
1866
Catalogue details

Licence: Public Domain Mark

Credit: An essay on yellow fever : comprising the history of that disease, as it appeared in the island of Antigua in the years 1835, 1839, & 1842. with an appendix continuing the history to 1853 / by Thomas Nicholson. Source: Wellcome Collection.

Provider: This material has been provided by Royal College of Physicians, London. The original may be consulted at Royal College of Physicians, London.

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    is much indented with creeks and hays, whose oozy waters maintain the growth of impenetrable thickets of the different species of mangrove, and are the fertile sources of malaria. In a geological point of view, the island com- prises three distinct formations of the tertiary class, of which the most superficial beds occupy the northern and eastern divisions. These con- sist of a calcareous marl, and coarse sandstone, interspersed with masses of a tolerably compact shell limestone. On the surface are found a great variety of marine exuviae, analogous to those which at present inhabit the surrounding seas, as astrea, meandrinae, tubipora, &c. The surface of this district is exceedingly broken and undulated, consisting of a series of round-backed hills of no great elevation, covered with a light arid soil. The sides of the hills and intervening valleys are highly cultivated, and produce a rapid growth when duly favoured with rain. The mountainous district, forming the south- ern and western divisions, is composed of rocks of the newest floetz trap formations, as wacke, porphyry, trap breccia, ampygdaloid, and some spherical masses of basaltic green-stone. Some