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| | The Monk in the Garden Web site |
 | | London: Macmillan and Company, 1894 (facsimile edition, Baltimore: The Johns Hopkins University Press, 1992). |
 | | Kingsland, Sharon E., "The battling botanist: Daniel Trembly MacDougal, mutation theory, and the rise of experimental evolutionary biology in America, 1900-1912," Isis 82:479-509, 1991. |
 | | Seton, A., "On the variation in the colour of peas from cross-impregnation," Transactions of the Horticultural Society, London, 5:236-7, 1824. |
| www.houghtonmifflinbooks.com /features/monk_garden/bibliography.shtml (2900 words) |
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