IV 



PLANT-BREEDINQ (see also Insects visiting flowers), 

 On the pollen of Carica papaya 



POISONOUS PLANTS, 



The poisoning of birds by Cassia bioapsularis 



Rainfall 



Rainfall in the Botanic Gardens, Singapore and Peuang in 



in 



1917 

 1918 

 1919 

 1920 



206 



261 



32 

 138- 

 211 

 446 



261 

 258 

 258- 

 302 



158 

 444 



445 



145 



44,441 



SOIL and the NUTRITION of PLANTS 

 A new source of plant food 

 Forests and their retention of rain water 

 Relation of soil acidity to Plant juice 

 Some factors in-plant competition 



Stock Foods, or animal foods. 



Dioscorea kegeliana, Griseb., the Yam poule of the West Indies 

 Under-Sea meadows 



Vegetation of MAlaya. — (See also Fungi) 



A Botanic Reserve — Mount Maquiling 



The composition of a piece of well-lciinad Singapore secondary 



jungle thirty years old 

 Orchid notes 



PLATES. 



Cycas damaged by Catochrysops pandava 



Races of Dioscorea alata 



dc. 



do. 



do. 



Hibiscus sabdariffa, the Rozelle, in the Economic 



Garden, Singapore 

 The white or 8-months Guinea yam 

 The yellow or 12-months Guinea yam, and a yam. 



of Hainan 

 Dioscorea dumetorum and D. pentaphylla 

 Hevea confusa 

 Nuts of different races of the Coconut palm grown 



in Singapore 

 do. 

 do. 

 Yams of Dioscorea alata, D. esculenta and D. 



kegeliana 

 ^Ir. Lawrence Niven, first Superintendent of the 



Botanic Gardens, Singapore. 

 In the Palm valley, Botanic Gardens, Singapore 

 Kagi,-Eleusine coracana, in the Economic Garden, 



Singapore 

 Hill paddy in the Economic Garden, Singapore 

 Hibiscus Sabdariffa, var. altissima, in the Econo- 

 mic Garden, Singapore 

 In the Palm valley, Botanic Gardens, Singapore 

 Areca catechu, the Betel palm 

 Flowers of the Betel palm 

 Piper Betle, the Betel-pepper vine 

 The Sword bean, Canavalia ensiformis, in the Eco- 

 nomic Garden, Singapore 

 Sorghum vulgare, the Great ^lillet 

 Yams from Nigeria 



Dioscorea rotundata and D. cayenensis 

 Foliage of the White and the Y'ellow Guinea yams. 



