Hydrocephalic amaurosis / by Jabez Hogg. Amaurosis and strabismus from ascaris lumbricoides.

  • Hogg, Jabez, 1817-1899.
Date:
[1888]
Catalogue details

Licence: Public Domain Mark

Credit: Hydrocephalic amaurosis / by Jabez Hogg. Amaurosis and strabismus from ascaris lumbricoides. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    These molluscs leave the water in the early dewy morn, and take to the short grass of the adjacent meadow land, where they are eaten with a keen relish by the sheep. The late Dr. Rolleston believed the intermediary host of ascayis to be the black slug (Umax cineris). I doubt this, as while in the larval condition their habits are strictly aquatic. The first stage of filarian development takes place in water quite irrespective of whether their final destination is to be rediae or cercarise. The portion of their lives spent as free swimmers is a short one; it is, however, long enough to do a great amount of mischief. It is a fact that the dwellers—children and adults—in the valleys of rivers, as those of the Nile valley, for instance, are the greatest sufferers from ascaris lumbri- coides. Hence the great importance of strict a'tention to the quality and purity of the drinking water. 1 Bedford Square, August 1st, 1888. T. W. Danks & Co., Steam Printers, Dean Street, Solio Square, W,