A Biological Survey of Lake George, N.y

A Biological Survey of Lake George, N.y

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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. 1922 edition. Excerpt: ...the lower water up to the time of these observations, yet there was an abundance left. Thus it does not seem probable that the decrease during the remainder of the summer period of stratification would be sufficient to reduce the amount of dissolved oxygen in the bottom water of the deeper areas to 50 per cent of saturation; this would mean an ample supply of oxygen at all depths in Lake George throughout the summer period of stratification. While the temperature of the deep water toward the north end of Lake George was lower than that at the south end, it was found that the water at depths of 30 m. and 35 m. (100 feet and 115 feet) off Jenkins point possessed substantially the same amount of dissolved oxygen as 'noted at these depths in the southern basin; namely, approximately 7.7 cc. and 7.3 cc. per liter respectively. In comparison with the results obtained on the Finger lakes, the distribution of the oxygen in Lake George most closely resembled that found in Owasco Lake Birge and Juday, 1914, p. 602. In the shallower members of the Finger lake group, such as Conesus and Otisco lakes, the oxygen had entirely disappeared from the bottom water, while in Cayuga and Seneca lakes a somewhat larger quantity was found in the lower water than in Lake George. The water in the basin of the spring located to the north of Pearl point contained 5.4 cc. of oxygen per liter, amounting to 67.6 per cent of saturation. The water of Shelving Rock brook yielded 6.4 cc. of oxygen per liter, or 95.1 per cent of saturation; while the spring-fed tributary of this stream contained approximately 7 cc. per liter, which was also 95.1'per cent of saturation. Plankton The fresh water plankton comprises a considerable variety of minute organisms belonging to...show more

Product details

  • Paperback | 32 pages
  • 189 x 246 x 2mm | 77g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236823974
  • 9781236823977