Memoir Volume 4

Memoir Volume 4

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1901 edition. Excerpt: ...to be the complete development of the filaria in the mosquito, and at this stage it was conjectured that, on the death of the mosquito on the surface of the water, the young filaria escaped from the insect and swam about until it was taken up by man in drinking water. In 1900 Low' in sectioning a number of filariated mosquitoes discovered a worm in the proboscis. He thus describes the transformation into the seventh stage: --' Vihen the filariae have reached their highest stage of development in the thoracic muscles, they leave that tissue and travel forward in the direction of the head of the mosquito and pass into the loose cellular tissue which abounds in the prothorax near the salivary glands. Some struggle between the thorax and abdomen or within the abdomen itself. They then pass into the neck, enter the lower part ofthe head and coil themselves up in the loose connective tissue immediately below the cephalic ganglion and salivary sack. They pass into the proboscis by making an independent passage through the base of the labrum and pushing forward along the proboscis between the labrum and hypopharynx amongst the stilettes. Here they are found stretched along the length of the proboscis, head foremost. Two worms nearly always live together in the proboscis.' James' apparently was working at this subject at about the same time, and writes in an article, dated September, a description of the worms as seen in /1nopz'_c/cs 1. Low, Bririslx Medical journal, I9co, June 16 2. James, Brimlr lllnlical journal, 1900, vol. ii, Sept. 1, p. 535. rossii on the seventeenth and eighteenth days of cultivation. ' The young filariae are found in the tissues of the thorax, in those of the head and neck, and in fewer...show more

Product details

  • Paperback | 56 pages
  • 189 x 246 x 3mm | 118g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236957024
  • 9781236957023