164 



STUDIES IN SEEDS AND FRUITS 



Some Results illustrating the Absence of a true Hygroscopic 

 Reaction in Impermeable Seeds, the Slight Variation being 

 Instrumental. (Daily observations made in the short experiments 

 only.) 



II. Permeable Seeds. (Hygroscopicity 2 to 5 per cent.) 



(The hygroscopic range of a seed is the amount of variation stated as a percentage 

 of the average weight. Thus, if a seed varied between 98 and 102 grains, the range 

 would be 4 per cent. The methods of obtaining these results are described a page or 

 two back.) 



^sculus Hippocastanum (Horse-chestnut) 

 Allium ursinum .... 

 Anona muricata (Sour Sop) . 



,, palustris .... 



,, reticulata (Custard Apple) . 



,, squamosa (Sweet Sop) 

 Bignonia (species of) . 

 Canavalia ensiformis . 

 Chrysophyllum Cainito (Star Apple) 

 Citrus decumana (Shaddock) 

 Datura Stramonium 

 Dolichos Lablab .... 

 Faba vulgaris (Broad Bean) . 

 Hura crepitans (Sandbox Tree) . 

 Iris foetidissima .... 

 Luffa acutangula (Loofah) . 

 Phaseolus multiflorus (Scarlet-runner) 

 Pisum sativum (Peas) wrinkled 



,, ,, smooth 



Primula veris (Primrose) 

 Ravenala madagascariensis (Travellers' 

 Ricinus communis (Castor Oil) 

 Sapota Achras (Sapodilla) . 

 Scilla nutans (Bluebell) 

 Swietenia Mahogani (Mahogany) . 

 Tamus communis 



Palm 



Hygroscopic 

 range. 



4 '5 per cent. 

 4"o ,, 



3 3 



3"S 



2-4 

 3"o 



4-0 

 2-2 

 4-0 

 2-2 



5*0 

 6-0 



4"5 



2-0 



I '5 

 1*9 



4-0 

 2-0 

 4-0 



Average weight of 

 a seed in grains 



[30-0 grains. 



4*5 



