444 MR. R. D’O. GOOD ON THE 
The germination results obtained are here given in tabulated form :— 
Sample. Bird, Bird shot. Fruits sown, lst germination. Remarks. 
l. Teal ...... 8 Aug. (25. 15 Aug. 25, 22 Aug. 25, Nearly all germinated 
by 1 Sept. '23. 
2 Teal wii... 25 Feb. 725, 31 Aug. 23. 12 Sept. 23. Almost completely 
failed to germinate. 
39. Tufted Duck 1921. 2] Aug. 23. 5 Sept. 25. Nearly all germinated 
by 9 Sept. 23. 
4. Teal.. ... 21 Feb. 28. 11 Sept. 25. — 2] Sept. 23. Only 7 fruits germi- 
nated from this 
sample, 
The number of fruits in the samples averaged about 60. 
D 
Fra, 1. 
EN. 
DE 
A 
A. Longitudinal section of ripe fruit of Hippuris. 
B. Longitudinal section of fruit removed from gizzard of a Teal. 
The ripe drupes of Hippuris are ovoid in shape, and consist of a thick hard 
endocarp covered by a thin fleshy exocarp. The endocarp is incomplete at 
the upper end, and the foramen is closed by a plug or stopper of hardened 
tissue. The whole bears a remarkable resemblance to a corked ovoid bottle. 
The growth of the ovule and the formation of the stopper is fully described 
by Juel (in Nova Acta Reg. Soe. Sei. Upsaliensis, ser. 4, vol. ii. no. 11). 
Earlier papers on the same subject are those of Unger (in Bot. Zeit. Jahr. vii.) 
and Tulasne (in Ann. Sei. Nat. ser. 3, tom. xii.). Juel shows that the 
stopper is formed from the hardened under part of the horizontal funicle and 
the hardened upper part of the integument in the vieinity of the mieropyle. 
Above the stopper comes the soft tissue of the ovary wall, or receptacle, from 
which the stvle arises, 
