Index. 



Ill 



Para-rubber tree, propagation of, 54, 

 Peanuts, trial of, 12. 

 Penzig's fungi of Java, 14. 

 Perak, indigo substitutes in, 426. 

 Peristrophe tinctoria, 428. 

 Persea gratissima, polyembryony 



in, 258. 

 Phalaenopsis Kunstleri, hybrid, 46. 

 ,, sumatrana, hybrid, 



46. 

 Pinanga, account of, 254. 

 Piper betle, 294. 

 Plesispa Reichei, 3. 

 Pollen of papaya, 206. 

 Pollination of flowers, 165. 

 Polyembryony, 258. 

 Polygonum tiuctorium, 428. 

 Polyporus hirsutus, a parasite, 110. 

 Poria hypobrunnea, 429. 

 hypolateritia, 430. 

 Potato, history of, 135. 

 Promecotheca cumingii, 3. 

 Psyllid on nnango, 116. 

 Pterocarpus indicus, 197. 



Raciborski's fungi of Java, 14. 

 Radishes, trial of, 8. 

 Ragi, 425. 



,, demonstration crop of, 206. 

 Rainfall and forests, 419. 



„ at Penang for 1917, 34, 36, 



,, for 1918, 140, 

 142. 

 „ ,, „ for 1919, 213, 



315. 

 „ ,, ,. for 1920, 448, 



450. 

 ,, at Singapore for 1917, 32, 

 36. 



for 1918, 138, 

 142. 

 ,, for 1919, 211. 

 215. 

 „ „ „ for 1920, 446, 



450. 

 Rice, demonstration crops, 199. 



,, manures for, 304. 

 Ricinus as a crop, 282. 

 Ridley, H. N., 103. 

 Rozelle, trials of 73, 242. 

 Rubber, history of, 309. 

 ,, smoking of, 434. 

 Ruellia indigotica, 428. 



Saccolabium arachnanthe, 48. 



„ Cal^eolus, flowering of, 



49. 

 ,, secundum, 46. 



Sa'icardo's fungi of Java. 14. 

 Soil, acidity of, 258. 

 ,, of a forest, 419. 

 Sorghum vulgare, trial of, 423. 428. 

 Soy beans, trial of, 12. 

 Spathoglottis afimis, 443. 

 Squirrels on flowers, 176. 

 cstrobilanthes flaccidifolius, 426, 428. 

 Stauropsis breviscapa, 46. 

 Sun-birds on flowers. 176. 

 Sword bean, trials of, 300. 



Thunbergia laurifolia, 100. 

 Tomatoes, trial of, 10. 

 Trametes badia, a parasite, 110. 

 Trees, large, removal of, 310. 

 Tuba root, 192. 



u 



Under-sea meadows, 444. 



V 



Vegetables, trial of, 6. 

 Virgin soil, nature of, 419. 

 Vitamines, 308. 



w 



Wasps on flowers, 175. 

 Water-supply in the Gardens, 103. 

 Wet rot, of rubber, 429. 

 White Guinea yam, 439. 

 Willughbeia firma, 100. 

 Woad. 427. 428. 



Xanthosoma, trials of, 13. 

 Xyloccpa on flowers. 



Yam, African, 86. 



,, greater, races, 37, 158. 



,, greater, trials of, 129. 



,, lesser, races of, 159. 



,, pest of, 6. 



,, poule, 158. 



,, staking, 301. 

 Yautias. trial of, 13. 

 Yellow Guinea Yam, 439. 



Zoological collection, Singapore, 63, 



94. 

 Zostera marinr, 444. 



