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 |