File:PSM V84 D428 Water relations of a large cylindrical cactus.jpg
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| Description | Graphs showing the water relations of a large cylindrical cactus when separated from a source of supply for extended periods. The lower line shows the weight decreasing from 38 kg. to 28.8 kg. in five years. The upper line shows the rate of daily loss which fell from 10.6 g to 3.5 g. during this time. The reate of loss is not directly proportional to the succulence or amount of water present. | |||
| Date | ||||
| Source | D. T. MacDougal: The measurement of environic factors and their biologic effects. The Popular science monthly, Volume 84, p424. New York, Popular Science Pub. Co., May 1914. Online: archive.org. | |||
| Author | D. T. MacDougal | |||
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This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
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| current | 15:00, 15 January 2014 | | 1,642 × 1,997 (204 KB) | Ineuw (talk | contribs) | Changed background to white |
| 23:35, 14 March 2011 |  | 1,720 × 2,028 (238 KB) | Martin H. (talk | contribs) |
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