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Larger quantities are available at lower prices. Quotations 
sent upon request. 
LAWS RELATING TO LONCHOCARPUS 
The Bureau of Customs of the United States Treasury Department, 
in Treasury Decision 47230 (446), issued August 25, 1934, classified 
ground timbo and derris roots as follows: 
"(l) Insecticides of vegetable origin. — Ground timbo 
root and ground derris root, vegetable substances which are 
natural and uncompcuhded, advanced in value by grinding, and 
not containing alcohol, and which are used as insecticides 
in manner arid purpose identical with the manner and purpose 
in which ground pyrethrum flowers, are used.are^ dutiable 
under paragraphs 35 and 1559, Tariff Act of 1930, by 
similitude to -'ground pyrethrum flowers. 
'•Pyrethrum extracts and other vegetable extracts are 
excluded from classification under paragraph 35, directly 
or by similitude, because they are not natural substances 
(T. D. 33522). If they are insecticides and not chiefly used 
for the prevention of disease in man or animals (T. D. 47038), 
they are dutiable as nonenumerated manufactures at the rate 
of 20 percent ad valorem under paragraph 1558, Tariff Act of 
1930. Bureau letter to the collector of customs, New York, 
N. Y. , August 3, 1934." 
Griffith (177), of the Bureau of Customs, United States Treasury 
Department, on May 8, 1936, advised a prospective exporter of cube in 
Venezuela as follows: 
"The Bureau is of the opinion that crude barbasco 
(cube root) is entitled to free entry as a crude drug under 
paragraph 1669 or crude vegetable substance under paragraph 
1722 of the Tariff Act of 1930. Powdered barbasco (cube root) 
is classifiable by similitude to ground pyrethrum flowers and ► 
is dutiable at 10 percent ad valorem under paragraphs 35 and 
1559 of the Act." 
Griffin (176), in en address before the twenty-third annual 
meeting of the National Association of Insecticide and Disinfectant 
Manufacturers at Philadelphia, December 1936, outlined the provisions 
of the Federal Insecticide Act of 1910 and the procedure followed by 
the Food and Drug Administration in enforcing it. Relative to cube 
the following was said: 
"In preparations containing derris or cube root extrac- 
tive material, it. is known that the rotenone, the deguelin 
and certain other compounds are insecticidally active. However, 
there arc no practical methods known for identifying and 
determining the percentages of every one of the active consti- 
