. Bulletin from the laboratories of natural history of the State University of Iowa. Natural history; Natural history. leading to the hills north of the bay (see Plate I, fig. 2) ; station 3 was located in front of the Laboratory cot- tage in a prairie opening (see Plate III, fig. 1) ; station 4 was in the small open bur-oak grove south of the cottage (see Plate III, fig. 1) ; station 5 was on the bank near the steps leading up from the Laboratory pier in a strip of prairie open- ing leading down from the west and northwest (see Plate III, fig. 2) ; station 6 was in the deep woods south of the
. Bulletin from the laboratories of natural history of the State University of Iowa. Natural history; Natural history. leading to the hills north of the bay (see Plate I, fig. 2) ; station 3 was located in front of the Laboratory cot- tage in a prairie opening (see Plate III, fig. 1) ; station 4 was in the small open bur-oak grove south of the cottage (see Plate III, fig. 1) ; station 5 was on the bank near the steps leading up from the Laboratory pier in a strip of prairie open- ing leading down from the west and northwest (see Plate III, fig. 2) ; station 6 was in the deep woods south of the Laboratory, and just north of the Beck spring. The elevation of station 5 was about 10 feet above the lake; that of stations 3 and 4 about 30 feet; of station 2 = 75 feet; and station 1 = 152 feet.^ The locations of the stations are shown in figure 1. The obser- vations were made on six consecutive days, August 6 to 11 in- clusive, during the following periods: Aug. 6th, 9 a. m. to 7 p. M.; Aug. 7th, 8th, and 9th, 7 a. m. to 7 p. m. ; and Aug. 10th and 11th, 8 :30 A. M. to 7 :00 p. M. For the evaporation observations open pans 150 mm. in diameter were used, and the loss was measured in cubic centimeters. The general results are given * The last two elevations were furnished by Prof. A. O. Thomas. They were de- termined July 26, 1910, when the elevation of the lake surface above sea-level was N. 1,230 feet. 22. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original University of Iowa. Iowa City, Iowa : The University
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