92 BUREAU OF ENTOMOLOGY AND PLANT QUARANTINE [Oct.-Dec. 
potato diseases and insect pests. The importation of potatoes is now authorized 
from Bermuda, Canada, Cuba, the Dominican Republic, Estonia, Latvia, Spain 
(including the Canary Islands), and the States of Chihuahua and Sonora, and 
the northern territory of Baja California, Mexico. 
Cotton and cotton wrappings. — The order of April 27, 1915, and the rules and 
regulations issued thereunder, revised, effective February 24, 1923, amended 
effective May 1, 1924, December 15, 1924, December 11, 1937, and July 1, 1938, re- 
strict the importation of cotton and cotton wrappings from all foreign countries 
and localities, on account of injurious insects, including the pink bollworm. 
Cottonseed products— The two orders of June 23, 1917, and the rules and regu- 
lations issued thereunder, effective July 16, 1917, amended, effective August 7, 
1985, restrict the importation of cottonseed cake and meal and all other cotton- 
seed products except oil from all foreign countries and localities, and the impor- 
tation of cottonseed oil from Mexico, on account of injurious insects, including 
the pink bollworm: Provided, That these commodities which originate in and 
are shipped directly from the Imperial Valley, Baja California, Mexico, may 
•enter without restriction. 
Plant safeguard regulations— These rules and regulations, revised, effective 
December 1, 1932, provide safeguards for the landing or unloading for trans- 
shipment and exportation and for transportation and exportation in bond of 
restricted or prohibited plants and plant products when it is determined that 
such entry can be made without involving risk to the plant cultures of the 
United States and also provide for the safeguarding of such plant material at a 
port or within the territorial limits of the United States where entry or landing 
is not intended or where entry has been refused. 
Rules and regulations governing the movement of plants and plant products 
into and out of the District of Columbia. — These rules and regulations, revised 
effective April 30, 1938, are promulgated under the amendment to the Plant 
Quarantine Act of May 31, 1920. They provide for the regulation of the move- 
ment of plants and plant products, including nursery stock, from or into the 
District of Columbia and for the control of injurious plant diseases and insect 
pests within the said District. 
MISCELLANEOUS REGULATIONS 
Mexican border regulations. — These regulations, effective September 28, 1942, 
were promulgated under the act approved January 31, 1942, entitled, "To provide 
for regulating, inspecting, cleaning, and, when necessary, disinfecting railway 
cars, other vehicles, and other materials entering the United States from Mexico" 
(Public Law 426, 77th Congress), and supersede the rules and regulations pro- 
hibiting the movement of cotton and cottonseed from Mexico into the United 
States and governing the entry into the United States of railway cars and 
other vehicles, freight, express, baggage, or other materials from Mexico at 
border points, promulgated June 23, 1917, and amended effective January 29, 
1920. They are designed to prevent the entry of the pink bollworm of cotton, 
which is known to exist widely in Mexico. They provide for the examination 
of passengers' baggage, for the disinfection of railways cars and other vehicles, 
freight, express, and other shipments, and for the cleaning of domestic cars 
handling Mexican freight. All fees collected for disinfecting railways cars and 
other vehicles are deposited in the United States Treasury as miscellaneous 
receipts. 
The inspectors concerned in the enforcement of these regulations at border 
points are charged also with enforcement of restrictions on the entry of plants 
and plant products under various foreign plant quarantines. 
Regulations governing sanitary export certification. — These regulations, revised 
effective September 21, 1936, were promulgated pursuant to authority granted in 
the Agricultural Appropriation Act of May 17, 1935 (49 Stat. 268), and repeated 
in subsequent appropriation acts. They provide for the inspection and certifica- 
tion of domestic plants and plant products intended for export to countries 
requiring such certification. All fees collected for this service are deposited in 
•the United States Treasury as miscellaneous receipts. 
