298 BUREAU OF PLANT QUARANTINE [Oct.-Dcc. 
involving risk to the plant cultures of the United States, and also provide Tor 
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. 1931, are promulgated under the amendment to the plant 
quarantine act of May 31, 1020. 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 
Rules and regulations prohibiting the movement of cotton and cottonseed fronb 
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. — These rules and regulatious, promulgated June 
23, 1917, and amended effective January 29, 1920, pursuant to authority given 
in the appropriation act for the United States Department of Agriculture for 
the fiscal year 1918, and since repeated annually, 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 railway cars, freight, express, and other shipments, and for the 
cleaning of domestic cars handling Mexican freight. All fees collected for 
cleaning and disinfecting railway cars 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. 
Inspection and certification regulations to meet foreign sanitary require- 
ments. — These regulations, revised effective August 1, 1931, were promulgated 
pursuant to authority given in the appropriation act for the United States 
Department of Agriculture for the fiscal year 1927. They provide for the in- 
spection and certification of fruits, vegetables, nursery stock, and other 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. 
