To Edward Frankland 12 April 1874
Summary
Finding that the leaves of Drosera digest all the phosphate of lime out of bones and then remain clasped over the bones for a long time, CD wants to determine whether it is the phosphate of lime or the animal matter in the bones that keeps them clasped. He asks EF to send 2 or 3 grams of pure phosphate of lime for his testing. [See 9411.] Will experiment in the summer using EF’s suggestion that leaves might serve to test weak sewage. Results of Sanderson’s experiments with acids of great use.
| Author: | Charles Robert Darwin |
| Addressee: | Edward Frankland |
| Date: | 12 Apr 1874 |
| Classmark: | The John Rylands Library, The University of Manchester |
| Letter no: | DCP-LETT-9405A |
To Edward Frankland 17 April 1874
Summary
Thanks for the pure phosphate of lime.
| Author: | Charles Robert Darwin |
| Addressee: | Edward Frankland |
| Date: | 17 Apr 1874 |
| Classmark: | The John Rylands Library, The University of Manchester |
| Letter no: | DCP-LETT-9415A |
To Edward Frankland 22 April [1874]
Summary
Requests permission to call briefly to discuss Drosera.
| Author: | Charles Robert Darwin |
| Addressee: | Edward Frankland |
| Date: | 22 Apr [1874] |
| Classmark: | The John Rylands Library, The University of Manchester |
| Letter no: | DCP-LETT-9424A |
To Edward Frankland 28 April [1874]
Summary
Thanks for letter relating to domesticated bullfinches’ instinctively cutting off cowslips [see 9430]. Suggests observing whether the birds swallow any part of flower or particular parts.
| Author: | Charles Robert Darwin |
| Addressee: | Edward Frankland |
| Date: | 28 Apr [1874] |
| Classmark: | The John Rylands Library, The University of Manchester |
| Letter no: | DCP-LETT-9432A |
From Edward Frankland 15 April 1874
Summary
Sends some phosphates of lime free of animal matter [see Insectivorous plants, p. 109].
| Author: | Edward Frankland |
| Addressee: | Charles Robert Darwin |
| Date: | 15 Apr 1874 |
| Classmark: | DAR 58.1: 49–50 |
| Letter no: | DCP-LETT-9411 |
From Edward Frankland 26 April 1874
Summary
Bullfinches’ instinctive capacity for removing nectaries from cowslips.
| Author: | Edward Frankland |
| Addressee: | Charles Robert Darwin |
| Date: | 26 Apr 1874 |
| Classmark: | DAR 164: 210 |
| Letter no: | DCP-LETT-9430 |
From Edward Frankland 30 April 1874
Summary
Variation in bullfinches’ instinctive ability to remove nectaries and ovaries from cowslips.
| Author: | Edward Frankland |
| Addressee: | Charles Robert Darwin |
| Date: | 30 Apr 1874 |
| Classmark: | DAR 164: 211 |
| Letter no: | DCP-LETT-9435 |
| letter | (7) |
| Darwin, C. R. | (4) |
| Frankland, Edward | (3) |
| Frankland, Edward | (4) |
| Darwin, C. R. | (3) |
