From J. T. Moggridge 12 July 1873
Summary
Sends his paper on Ophrys insectifera, translated into German by H. G. Reichenbach [Abh. Kais. Leopold.-Carol. Dtsch. Akad. Naturforsch. 33 (1870) no. 3], which shows the intermediates between O. aranifera and O. apifera. He has since gathered information on variation in Ophrys.
| Author: | John Traherne Moggridge |
| Addressee: | Charles Robert Darwin |
| Date: | 12 July 1873 |
| Classmark: | DAR 171: 218 |
| Letter no: | DCP-LETT-8977 |
From J. T. Moggridge 22 July 1873
Summary
He will repeat the experiments in which CD found that formic acid vapour killed seeds [see 8866]. John Lindley describes effects of other acids on germination.
He has tabulated the large amount of variation in English Ophrys apifera.
| Author: | John Traherne Moggridge |
| Addressee: | Charles Robert Darwin |
| Date: | 22 July 1873 |
| Classmark: | DAR 171: 219 |
| Letter no: | DCP-LETT-8984 |
From J. T. Moggridge 24 July 1873
Summary
CD has clarified the way to conduct the formic acid experiment.
| Author: | John Traherne Moggridge |
| Addressee: | Charles Robert Darwin |
| Date: | 24 July 1873 |
| Classmark: | DAR 171: 220 |
| Letter no: | DCP-LETT-8986 |
From J. T. Moggridge 30 July 1873
Summary
His preliminary results with formic acid show that it inhibits germination of several kinds of seed. It also inhibits growing of mildew, which he speculates may facilitate germination.
| Author: | John Traherne Moggridge |
| Addressee: | Charles Robert Darwin |
| Date: | 30 July 1873 |
| Classmark: | DAR 171: 221 |
| Letter no: | DCP-LETT-8990 |
| letter | (4) |
| Darwin, C. R. | (4) |
