[Letter, Charles R. Darwin to John Burdon-Sanderson, July 25, 1873 page 3] : 無料・フリー素材/写真
[Letter, Charles R. Darwin to John Burdon-Sanderson, July 25, 1873 page 3] / UBC Library Digitization Centre
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| 説明 | No known copyright restrictions. Please credit UBC Library as the image source. For more information, see digitalcollections.library.ubc.ca/cdm/about.Description: Charles Darwin, Down to John Burdon-Sanderson. Discusses the latest results regarding the digestive powers of Drosera and Dionaea; the different substances that cause inflection; the effects of heat and of phosphate of ammonia on the leaves. A.L.S. 2 p. Printed in Darwin Frances. The Life and Letters of Charles Darwin, V. 2, p. 495.Transcript: bulb obliquely, not touching the bottoms of the (?) with 3 oz. of (?) (?) & I (?) (&?) (moved?) (the?) (?) (about?). A temp. of from 100° to 125° Fahr. causes strong inflections within 10 minutes. A temp from 80° to 100° causes some inflection, but after a much longer time. At 130° there is never any inflection, but the leaf is not killed as is proved be subsequent inflection when placed in a Sol. of Carb. of Ammonia; & by re-expansion when afterwards placed in pure water. The vitality of the leaves is also shown by the aggregation of the protoplasm when the leaves are give Carb. of Amm. All this holds good until the leaves are heated up to or above 145°. Between 145° and 151° there is a remarkable change; the glands Creator: Darwin, Charles, 1809-1916Date Created: 1873-07-25Source: Original Format: University of British Columbia Library. Woodward Biomedical Library. Charles Woodward Memorial Room. The Darwin-Burdon-Sanderson Letters.Permanent URL: digitalcollections.library.ubc.ca/cdm/compoundobject/coll... |
| 撮影日 | 2014-05-14 16:39:32 |
| 撮影者 | UBC Library Digitization Centre |
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