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haiari) from British Guiana has been cultivated experimentally in 
Malaya. The roots, harvested after two years, were, however, found to 
contain only a low content of rotenone and of ether extract. The 
cultivation of nekoe from Surinam is also being tried out at Buitenzorg. 
The exportation of cube from Peru and of derris from Malaya and the 
Dutch East Indies is shown from 1930 to 1935 (9 months). 
Clark (82), Assistant Trade Commissioner at Lima, Peru, in 1937, 
reported on the production of cube in Peru. Iquitos is the port of 
e^>ort and distributing point for all exports produced in the region 
served by the Amazon and its navigable tributaries. Several fair-sized 
firms carry on a general import and export business and finance various 
parties engaged in exploiting the resources of the region. There has 
been considerable dissatisfaction among the primary suppliers in the 
Iquitos region because of the low prices paid for cube by the Iquitos 
merchants. It is said that the Indians in retaliation mix cube with 
other materials, thus resulting in a low rotenone content per ton. 
It appears that the established Iquitos merchants can be circumvented 
in this trade only by the appointment of an individual or firm to 
buy directly and exclusively on the behalf of an American firm. Since 
the traffic in cube is limited it is highly improbable that an indi- 
vidual could be found that could work in competition with these 
organized suppliers and quote prices considerably lower. Cube root 
is grown in scattered regions in the southern part of Peru, but not 
in dependable commercial quantities. To transport the cube to Callao 
from these areas would necessitate the use of the railroads or trucks, 
which would entail considerable more expense than the crude raft 
transportation medium employed in carrying cube to Iquitos. May and 
June is the gathering season. Cube root from a plantation in the 
Department of Ayacucho is said to have a rotenone content of 7.5 to 
8 percent. It appears on the whole that the Iquitos prices could not 
be bettered at present, because it is only in Iquitos that cube can 
be reliably obtained in commercial quantities. To illustrate, a farmer 
in Ayacucho might promise three tons in six month's time and in the 
end perhaps a half ton would be delivered. 
The United States Department of Commerce (436) in 1936 issued 
statistics on rotenone-bearing root imports into the United States 
during the first 9 months of 1936, and in 1937 it (438) published 
preliminary statistics for the entire year 1936. 
The United States Tariff Commission (445) in 1937 also 
published statistics of 1936 imports of derris and cube. 
Bohan (32), American Commercial Attache at Santiago, Chile, 
reported in 1937 that derris and cube roots have not been used in the 
Chilean agricultural insecticide market. 
According to Nabuco de Araujo 294, about 10 tons of timbo were 
exported from Brazil during 1933, at about. 430$000 (about 28 dollars) 
per metric ton. During 1936 exportation amounted to 868 tons of 
powdered timbo with a value of 3,600 contos de reis, and in 1937 
