To Edward Frankland 12 July 1873
Summary
Seeks the assistance of a professional chemist in securing a qualitative analysis of the fluid secreted by the glands of Drosera which have the power of dissolving animal matter out of the bodies of insects. [See 8979.]
| Author: | Charles Robert Darwin |
| Addressee: | Edward Frankland |
| Date: | 12 July 1873 |
| Classmark: | The John Rylands Library, The University of Manchester |
| Letter no: | DCP-LETT-8977A |
From Edward Frankland 15 July 1873
Summary
Sends sodium carbonate for Drosera experiments. Will try to determine what the solvent is.
| Author: | Edward Frankland |
| Addressee: | Charles Robert Darwin |
| Date: | 15 July 1873 |
| Classmark: | DAR 164: 206 |
| Letter no: | DCP-LETT-8979 |
To Edward Frankland 16 July [1873]
Summary
Thanks EF for his offer of assistance. Could the viscid secretions [in glands of Drosera] contain pepsin? Will the sodium carbonate render the testing of organic matter difficult? [See 8979.] Will send the fluid in a fortnight.
| Author: | Charles Robert Darwin |
| Addressee: | Edward Frankland |
| Date: | 16 July [1873] |
| Classmark: | The John Rylands Library, The University of Manchester |
| Letter no: | DCP-LETT-8980A |
From Edward Frankland 17 July 1873
Summary
Is going to Switzerland, so analysis of Drosera washings will be delayed. Agrees with CD that solvent is probably pepsin.
| Author: | Edward Frankland |
| Addressee: | Charles Robert Darwin |
| Date: | 17 July 1873 |
| Classmark: | DAR 164: 207 |
| Letter no: | DCP-LETT-8981 |
To Edward Frankland 18 July [1873]
Summary
Agrees to delay sending the fluid [from the glands of Drosera] until early October. Will try suggestion about pepsin. [See 8981.]
| Author: | Charles Robert Darwin |
| Addressee: | Edward Frankland |
| Date: | 18 July [1873] |
| Classmark: | The John Rylands Library, The University of Manchester |
| Letter no: | DCP-LETT-8982A |
| letter | (5) |
| Darwin, C. R. | (3) |
| Frankland, Edward | (2) |
| Frankland, Edward | (3) |
| Darwin, C. R. | (2) |
| Darwin, C. R. | (5) |
| Frankland, Edward | (5) |
