100 



YAPJOUS F( )( )D -PLANTS 



Fii. 



108. — Date {FliiTiiix dact-nlifcra . Paliii I'aiiiily, Pnhni/crfz) . Criiup 

 trees in an oasis of tliu Saliara desert. (Strastnir^er.) 



on account of its strongly acid sap; in spite of its fruit-lilvc 

 qualities, however, it can still less l)c calletl a fruit. 



Similarly in the olive (Fig. 113) we liave a fruit ^^'hich is 

 put to a peculiar use. The |)ulp instead of being sour or sweet, 

 abounfls in a rich oil, wliicli when extracted In' ]iressure, is 

 the most ]iighl>' valued of vegetalilc oils foi- salails and in 

 cookery. I'eanuts and various other oily nuts, as also cotton 

 seed and others rich in oih >'ield a similar product which is 



