350 
Rubber: The wild rubbers of the Philippines are described. 
Pili Nuts: Statistics and discussion. as 
Lumbang: A résumé of this new Philippine industry is given. 
St. Ignatius Beans: The origin of this crop is given. 
Pearl. Fisheries: Mother-of-pearl shell and the pearling 
industry of the Southern Islands is discussed. 
Button Shells : Statistics. 
Window Shells: Discussion. 
Tortoiseshell: Statistics. 
Trepang: Discussion of the industry. 
Shark Fins: Statistics and discussion. 
Edible Seaweed: Discussion of the principal species. 
Tsinglass :; Discussion. 
Sponges: Discussion. 
Fish Ponds: Statistics. 
Beeswax and Honey: Statistics and discussion. 
Ambergris: Statistics. 
Silk: Discussion. 
Guano: Discussion. 
Birds’ Nests: Discussion. 
Colugo Fur: Discussion. 
[ Discussion. ] 
M. Brenter (Indo-China): I have been much interested in 
Mr. Barrett's contribution, because I am very keenly interested 
‘in a country just opposite the Philippine Islands, that is to say, 
Indo-China. If I understood rightly, Mr. Barrett attaches 
extreme importance to the sugar palm, which he considers will 
come to the fore in a very short time. I should like to ask 
whether he really considers it as being a possible competitor 
against the sugar cane. What do you consider, Mr. Barrett, 
would be the comparative yield per acre of the sugar palm and 
the sugar cane? , 
Mr. Barrett: That is a difficult question to answer. 
When we come to statistics of yields per acre we always 
are rather cautious, but in the article on the subject in 
the May number of the Philippine Agricultural Review some 
estimates are given. Not having those figures at hand, I can 
only say that we calculate the yield per acre from the sugar 
palm to be about twice the present yield of sugar per acre from 
sugar cane with the ordinary cultivation. Taking the general 
average of the yield from sugar cane, I think I am warranted in 
saying that the sugar palm is giving a better yield of sugar 
from its much richer sap than the sugar cane, and without any 
expensive machinery. I know it is a very strong thing to say, 
but it is certainly going to be a very dangerous rival to the 
sugar cane when handled by modern methods. 
