° 
Notes on Dipterocarps. 
No. 8. On some large-fruited species, and in particular 
upon the effects of the pressure of the embryo 
against the interior of the fruit-wall. 
By ly H, Burkitt. 
Dipterocarps with large fruits that are not wind-distributed 
occur in the genera Dr yobalanops, Shorea, Balanocarpus, Vatica, 
Pachynocar pus and Vateria. By the kindness of Dr. F. W. Fox- 
worthy, I have had material of some of them for study, and one 
Balanocarpus maximus, King, was the subject of Note no. 5 of this 
series (Jour. Str. Br. Roy. he SOC, IMG, el, MAO, jo, ane | il = auon 
adding in this note observations upon Shorea Thiseltoni, King, and 
Vatica fidleyana, Brandis, and also a few remarks upon a 
Dryobalanops which has the Malay name of “ Koladan.” 
The weight of a fruit of Shorea Thiseltom from the Weld Hill 
Forest Reserve, Kuala Kumpur, is found to be about 5.5 grammes; 
that of Vatica Ridleyana from tree no. 815 in the Botanic Gardens, 
Singapore, about 12.5 grammes. Neither is wind-distributed: but 
falls to the floor of the forest where it may be carried through 
small distances by rolling or by animals. 
Fig. 1, a fruit of Shorea Thiseltoni; figs. 2 and 3, fruits of Vatica 
Ridleyana. All % nat. size. 
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Shorea Thiseltoni is one of a small number of species in the: 
genus whose seeds contain oil as well as starch. That having been 
noticed, an analysis was requested from the Department of Agri- 
culture, Federated Malay States and Straits Settlements, and 
kindly made through the good offices of Mr. L. Lewton- Brain by 
Mr. R. O. Bishop. “The following is his report on seeds submitted 
to him from the Weld Hill Forest Reserve. “ A certain number 
of the kernels were found to be mouldy and were excluded: the 
remainder were sampled and dried. The dry kernels were extracted 
for oil-content. The residue from oil extraction was examined. 
for albuminoids and ash. Results :— 
Jour. Straits Branch R. A. Soc., No. 86 1922. 
