170 



rubber plantations existing in Angola in 1913, and the number 

 of trees of which they consisted. 



It may be concluded from his discussion that it is mainly in 

 the north of Angola that rubber cultivation has been most 

 widely developed. 



He then describes summarily the methods of cultivation, 

 extraction of the latex, and preparation of the rubber in use on 

 some of the plantation's, and he indicates the characteristics of 

 the samples obtained from the Angola plantations which are 

 in the Colonial Agricultural Museum of the Higher Institute O'f 

 Agronomy at Lis-bon. In concluding his study he offers some 

 considerations and conclusions to the effect that : 



Owing to the enthusiasm of the agriculturists of Angola, 

 who continue the planting of rubber trees although they cannot 

 expect the high prices which rubber has realized in the past, 

 and thanks to the efforts of the Government, in agreement with 

 those of the Bureau of Agriculture of Angola, for the develop- 

 ment of agriculture, this colony will become in a few years an 

 important centre of rubber production. 



Manihot Glaziovii is the species which is mostly cultivated. 



Tapping is generally carried out by vertical series of cuts. 

 Each series is about 2 metres, long. The incisions are made by 

 means of a kind of " pricker " invented by a planter in Angola, 

 M. Santos. 



The outer cortex is pulled from the trunk before the trees 

 are tapped. The latex is. collected in cups and generally poured 

 into hollow wooden or enamelled iron trays, in which it coagu- 

 lates spontaneously. Then the rubber is squeezed, pressed 

 and dried. 



On some plantations the rubber is washed, and also on some 

 the rubber is smoked during the drying. 



Plantation rubbers from Angola are offered in the form of 

 sheets and scrap. They realize fairly high prices, which are 

 not much inferior to those of rubbers from the Amazon and 

 the Eastern plantations. 



The CHAIRMAN : Gentlemen Our time is exhausted, and I 

 think we must take the other papers as read, although, of 

 course, they will be duly published. I am extremely sorry to 

 have had to hurry some of the papers, but, as you see, our 

 time is very limited. Personally, I am very grateful 

 to the readers of the different papers, as I am sure all the 

 other members are. It has been a most interesting afternoon, 

 and although some of us would have liked a little more time 

 for discussion, yet none of us, I think, can leave here to-day 

 without feeling that we have been dealing not only with 

 matters of interest, but of education. 



The following papers were taken as read : 



