. An ecological study of the mayfly Chirotenetes [microform]. Ãphémères; Mayflies; Flies; Mouches. Clemens: Ecological Study of Ciiirotesetes 9 numlxTs toward the mouth, disappearing when the slack water is reached. Chemical Analyses oj the Water.~\n order to obtain dihnite knowledge concerning the medium in which the nymphs live, chemical analyses were made at various times December i, 1914, to August 10, 1915. The results are given m tabular form. Comparison with analyses of the of the neighbouring Fall Creek shows a \ery close correspondence. Theamount of pollution is not exc
. An ecological study of the mayfly Chirotenetes [microform]. Ãphémères; Mayflies; Flies; Mouches. Clemens: Ecological Study of Ciiirotesetes 9 numlxTs toward the mouth, disappearing when the slack water is reached. Chemical Analyses oj the Water.~\n order to obtain dihnite knowledge concerning the medium in which the nymphs live, chemical analyses were made at various times December i, 1914, to August 10, 1915. The results are given m tabular form. Comparison with analyses of the of the neighbouring Fall Creek shows a \ery close correspondence. Theamount of pollution is not excessive asin- (liiated by the nitrogen <leterminationsas free antl albuminoid ammonia, nitrites, nitrates, oxygen consumed, chlorine and alkalinity. The oxygen content is high throughout the /My nut to ⢠a« lA 10 30 l9 Ae£>» jTMu na. hch. hph. _ _ Fig. 2.âRelation of the oxygen content to temperatures of Cascadilia Creek - oxygen in parte per million at 760 mm. p euure. â¢â -â -- = temperature. niTf MO. doubtless as a result of the turbulent nature of the creek. I"igure 5 shows the amounts of oxygen present reduced to 760 mm. pressure as compared with the amounts of saturation at the same temperatures and pressures. The carbon dioxide content is low, probably for the same reason that the oxvcen content is high. Temperatures.â, of the temperatures of the water in eascadilla Creek were taken almost daily for over a year tor the purpose of obtaining information regarding the fluctuation in temperature from day to day, the maximum. 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 Clemens, W. A. (Wilbert Amie), 1887-1964. [Toronto : University Library, pub. by the librarian]
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectflies, bookyear1917
