ii8 GLASS-HOUSES 



which is now also cultivated in Ceylon, Theobroma Cacao. 

 Our home consumption exceeds 46,000,000 Ib. The Cocoa- 

 tree belongs to the Sterculia Order, and must not be con- 

 founded with Erythroxylon coca (of the Flax Order), the 

 leaves of which, in virtue of the cocaine they contain, when 

 chewed, " lessen desire for food and enable the chewer to 

 undergo an enormous amount of fatigue from an increase of 

 nervous energy." 



The large Red Guava, Psidium guajava, var. pomiferum, 

 belongs to the Order Myrtaceae. Guava jelly comes from 

 the West Indies. 



Carludovica (Order Cyclanthaceae) is a neotropical genus 

 worthy of notice, as being the source of the " straw " 

 used for making Panama hats, which range in price from 

 is. 6d. to over ^20 apiece ! C. latifolia and plicata are 

 grown. 



Several of the following rubber-yielding plants may also 

 be seen in this house : 



Funtumia elastica^ the source of silk rubber, a most valu- 

 able product of W. Africa, which may perhaps be found 

 suitable for growth in Uganda. 



Landolphia klainei is the principal rubber-yielding climber 

 of the Gaboon region. Related to it are Willughbeia and 

 Urceola. All are Apocynaceae. 



Hancornia speciosa is the source of over 1,500,000 Ib. of 

 Pernambuco rubber every year. 



Hevea brasiliensis (Siphonia elastica) is another tree which 

 is frequently mentioned in the prospectuses of the rubber 

 companies. It is a Euphorbiaceous plant. 



The Mexican Castilloa elastica is one of the Artocarpeae ; 

 and lastly, Isonandra gutta, a tree of 70 ft. in height, and 

 3 ft. or 4 ft. in diameter, yields the well-known gdtta parcha. 



Ficus elastica may be seen in the" North Corridor. 



There is sometimes to be seen a small specimen of the 

 Banyan, Ficus indica^ or Urostigma benghalense, celebrated by . 



