DISPERSION. 



305 



intense pleasure, but would also considerably increase 

 the visitor's own appreciation of the educational value 

 of an exhibition too often looked upon, we fear, 

 without so much as leaving a trace on the memory. 

 What interpretation is to be assigned to the pecu- 

 liar form of the fruits in the different species of Trapa, 

 or " water-chestnut," is not so clear. The plants float 

 in the water, and the fruit of one species {Trapa 



Fig. 60. — Fruit of Trapa bicornis. 



bicornis), commonly cultivated in China, resembles 

 the head and horns of a bull. Another species {Trapa 

 bispinosa) is largely cultivated in Cashmere. In this 



Fig. 61. — Fruit of Trapa bispinosa. 



X 



