CoLGAN — Tropical Drift Seeds on Irish Atlantic Coasts. 



49 



bean, \vc aie told, is kiidwii as SI. Thomas's Heart.^ Tlie large bean sent me 

 .by Miss Warren from Killala liay, as well as one of those fonnd by Miss Delap 

 on the beach of Valentia Islanil, is of tiiis shape, though tlie leniform siiape 

 is much more common in the Irish specimens I have seen. This ajipears from 

 Dr. Guppy's ilotation experiments to be one of the most buoyant amongst 



3 x:tium^^^ 5 



Fig. 1. — E;uly Jiuwings o£ West Indi:m Drift Seeds. 



1. Saovo(jloUis iimiKonicd, from Clusiiis £xot., lOOo, p. 45. 



2.' JJiov/ai rcjlcxn, from J. Bauhin, Hist. Plant., torn, ii, 1651, p. 273. 



3. Entculu scaiidcits, from Cliisiiis' '2nd Lntin Ed. of Moniirdes, 157-1- 



i. Ipoiiioea liibciosa, from Clusiiis E.xot., pp. 40, 41. 



5. Gulliindimt liondiiccUa, from Dalecliimip, Hist. Phmt., 1586, p. ISC'). 



European drift seeds, this buoyancy, as he points out, being derived from an 

 iiiternal cavity caused by the shrinkage of the cotyledons, unequal shrinkage 

 in different seeds giving rise to varying degrees or complete absence of buoy- 

 ancy. The den.se, tough integument preserves the embiyo throughout its 



' Nuscitv,r in Insula D. Thomae dicta c6 cordis effigiam qiiale milgo pingi solet imUiiUir ; 

 idcircu a (luibusdS, Cor D. TKomae nuiifiupaUir. 



