lg BUREAU OF ENTOMOLOGY AND PLANT QUARANTINE [Jan.-Marcb 
additional area in Dorchester and Caroline Counties, Md. Included among 
those outlying areas to which fruits and vegetables from the main regulated 
area may be moved only when accompanied by certificates, are Hornell, Mount 
Morris, and Watertown, N. Y., and the regulated parts of Jefferson, Livingston, 
and Steuben Counties, N. Y. ; Newark and Mansfield, Ohio, and other regulated 
parts of Licking and Richland Counties, Ohio. Certain modifications have been 
made with reference to restrictions on the interstate movement of bananas and 
of commercially packed peaches. 
Copies of the revised regulations may be obtained from the Bureau of 
Entomology and Plant Quarantine, United States Department of Agriculture, 
Washington. 
H. A. Wallace, 
Secretary of Agriculture. 
[The above notice was published in the following newspapers: The Hartford Times, 
Hartford, Conn., March 4, 1939 ; the Wilmington Journal, Wilmington, Del., March 3, 
1939 ; the Evening Star, Washington. D. C, March 4, 1939 ; the Press-Herald, Portland, 
Maine. March 6, 1939 ; the Sun, Baltimore, Md., March 4, 1939 ; the Post Boston, Mass., 
March 4, 1939 ; the Manchester Union, Manchester, N. H., March 6, 1939 ; the News, 
Newark. N. J.. March 4. 1939 : the Times, New York, N. Y.. March 4, 1939 ; the Cleve- 
land Press. Cleveland, Ohio, March 4, 1939 ; the Bulletin, Philadelphia, Pa., March 3, 
1939 ; the Bulletin, Providence, R. I.. March 4, 1939 ; the Free Press, Burlington, Vt., 
March 4. 1939 ; the News-Leader. Richmond, Va., March 3, 1939 ; the Gazette, Charleston, 
W. Va., March 4, 1939.] 
B. P. Q. 359 (Supplement No. 1). 
Administrative Instructions to Inspectors on the Treatment of Nursery 
Products, Fruits, Vegetables, and Soil, for the Japanese Beetle, Pursuant 
to Notice of Quarantine No. 48 
• . February 15, 1939. 
ii. treatment of plants, with or without soil 
H. Methyl bromide fumigation 
In accordance with the provisions of regulation 6 (sec. 301.48-6) of the rules 
and regulations supplemental to Notice of Quarantine No. 48 (twelfth revision), 
the treatment specified below may be employed as a basis for certification of 
potted plants, plants in tubs, balled nursery stock, or bare-rooted nursery 
stock, when such treatment is carried out under the supervision of, and in a 
manner satisfactory to, an inspector of the Bureau of Entomology and Plant 
Quarantine, United States Department of Agriculture. 
Treatment method 
The nursery stock shall be fumigated with a dosage of 2% pounds of methyl 
bromide per 1,000 cubic feet, including the space occupied by the nursery stock, 
for a period of 2Y 2 hours, and during this time the temperature of the soil and 
the air in the fumigation chamber shall not be lower than 63° F. The treat- 
ment is to be applied only to plants with bare roots or in 8-inch pots or smaller, 
or in soil balls not larger than 8 inches in diameter. While a reasonable amount 
of moisture in the soil does not make the treatment ineffective, the soil should 
not be puddled or saturated, and withholding water for a period of 12 hours is 
advisable. The treatment shall be applied in a tight room or chamber with 
gas-tight doors and the plants shall be stacked on racks or separated so that 
the gas can have access to all sides of the pot or soil balls. 
After the room or fumigation chamber is loaded and closed the required dosage 
of methyl bromide shall be applied as a gas and may be introduced into the 
chamber as a gas or volatilized in the chamber. The air-gas mixture shall be 
circulated by means of a fan or blower throughout the entire 2% -hour fumiga- 
tion period or for the length of time required by the inspector. The treatment 
should be applied in a fumigation chamber of approved design. A chamber lined 
with sheet metal throughout, with a metal-covered door closing against gaskets 
and held tightly in place by refrigerator-door fasteners, is recommended. 
The efficiency of the treatment is dependent upon strict observance of all 
requirements herein stated. In authorizing the movement of potted plants and 
other nursery stock fumigated according to the requirements stated above,, it is 
understood that no liability shall attach to the United States Department of 
