. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 482 SELMAN A. WAKSMAN AND CHARLES E. RENN water from Gulf of Maine. Once a week, 1,200-cc. portions of water were removed and placed in oxygen bottles; the amount of oxygen absorbed in 7 days, by incubating the water in the dark, was then determined. The carboys were well shaken every day so as to increase the oxygen content of tin- \\atcr. The results (Fig. 2) slum that the unfiltered harbor water gave the greatest amount of decomposition and that the rate of decomposition of the organic matter in the water was gradually re
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 482 SELMAN A. WAKSMAN AND CHARLES E. RENN water from Gulf of Maine. Once a week, 1,200-cc. portions of water were removed and placed in oxygen bottles; the amount of oxygen absorbed in 7 days, by incubating the water in the dark, was then determined. The carboys were well shaken every day so as to increase the oxygen content of tin- \\atcr. The results (Fig. 2) slum that the unfiltered harbor water gave the greatest amount of decomposition and that the rate of decomposition of the organic matter in the water was gradually reduced. The total amount decomposed in 6 weeks per liter of water, in terms of oxygen consumed, was for the unfiltered harbor water, () for the filtered harbor water and for the Ciulf of Maine 23456 I I ME IX WEEKS FIG. 2. Changes in bacterial numbers and oxygen consumption upon continued decomposition of organic matter in sea water. Heavy lines represent oxygen consumption; light lines, bacterial numbers. Heavy unbroken line, curve for unfiltered water from Woods Hole; heavy broken line, curve for filtered water from Woods Hole; • • represents curve for unfiltered water from Gulf of Maine. SUMMARY 1. Investigations are reported on the decomposition of organic matter in sea water placed under controlled laboratory conditions. It has been found that, under these conditions, the organic matter in the water, both in suspension and in solution, can undergo rapid decomposition. It is <|tiite possible that a change in temperature, resulting from the sudden warming up of the water, may bring about not only an increase in the biological reactions, but also a change in their very nature; this limitation need not invalidate the results obtained, since these results are not a measure of what actually. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these ill
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
