Gives a reference to a paper.
In connection with Hildebrand's paper—may be consulted also Duchartre, Sur un cas de grossissement, sans f´econdation, des ovules de Cycas revoluta. Bull. Soc. Bot. ix. 531.
The pollen of a Ceratozamia was placed upon the ovules.—
- f1 4366.f1The date is established by the relationship between this letter, the letter to Daniel Oliver, 18 July , and the letter from Daniel Oliver, 20 July 1863.
- f2 4366.f2Hildebrand 1863b. See letter to Daniel Oliver, 18 July .
- f3 4366.f3Duchartre 1862 described the enlargement of ovules under the influence of pollen, apparently without being fertilised. Similar observations were detailed in Hildebrand 1863b.