16 BUREAU OF ENTOMOLOGY AND PLANT QUARANTINE [Jan. -Mar. 
grapefruit for the Texas counties of Brooks, Cameron, Hidalgo, and Willacy to 
the close of May 31 for the year 1942, provided conditions of infestation do not 
necessitate an earlier closing date. 
The host-free period for oranges and grapefruit, under this modification, will 
begin June 1 and continue through August 31, 1942, inclusive, in the above-named 
counties. 
In the counties of Dimmit, La Salle, and Webb, the grapefruit harvesting 
season closes on February 28, 1942. under the regulations, and the orange 
harvesting season closes on April 30 as to these three counties and the portion 
of Jim Wells County which is under regulation. No modification is made as to 
the harvesting seasons in these counties (7 C. F. R. § 301.64-5; sec. 8, 39 Stat. 
1165, 44 Stat. 250; 7 U. S. C. 101). 
Done at Washington, D. C, this 17th day of January 1942. 
P. N. Annand, 
Chief. 
[Copies of foregoing instructions were sent to all common carriers doing business in or 
through the State of Texas.] 
[Filed with the Division of the Federal Register January 20, 1942, 2 : 51 p. m. ; 7 F. R. 
444.] 
B. E. P. Q. 503, Fourth Revision. Effective January 9, 1942. 
ANNOUNCEMENT RELATING TO WHITE-FRINGED BEETLE 
QUARANTINE (NO. 72) 
TITLE 7— AGRICULTURE 
Chapter III — Bureau of Entomology and Plant Quarantine 
Part 301 — Domestic Quarantine Notices 
white-fringed beetle administrative instructions modified — treatments 
authorized 
Introductory note. — Recent investigational work has shown that it is possible 
to destroy all stages of the white-fringed beetles (Pantomorus spp.) in soil, 
with either carbon disnlphide or methyl bromide applied as a liquid, provided 
the temperature of the soil is sufficiently high and the period of exposure is long 
enough. The administrative instructions in this circular, specifying the various 
authorized methods of treatment of plants in soil, and of potting soil, are 
therefore hereby revised by authorizing the above treatment for soil plots, plung- 
ing beds, and potting soil (see paragraph (c) ). 
All treatments apply to the various species of white-fringed beetles. 
This circular supersedes all instructions in Circulars B. E. P. Q. 486, 489, 
and previous issues of 503. 
§ 301.72-5c. a Administrative instructions — Treatments authorized. — Pursuant 
to the authority conferred upon the Chief of the Bureau of Entomology and 
Plant Quarantine by paragraph (a) of § 301.72-5, Chapter III, Title 7, Code of 
Federal Regulations [Regulation 5 of Notice of Quarantine No. 72 on account 
of the white-fringed beetle], the following methods of treatment are hereby 
authorized effective January 9, 1942, when carried out under the supervision of 
an authorized inspector of the United States Department of Agriculture. 
(a) Plants in pots or in soil balls. 
(1) Methyl bromide fumigation at atmospheric pressures. — (i) Fumigation 
must be done with methyl bromide at a dosage of 1 pound per 1,000 cubic feet, 
including the space occupied by the plants, for a period of 4 hours, the soil 
masses and the air in the fumigation chamber to be at a temperature of not 
less than 85° F. 
(ii) Such fumigation shall apply only to those plants in 3-inch pots or smaller, 
or in soil balls not greater than 3 inches in diameter when spherical or thicker 
than 3 inches if not spherical, and the plants shall be stacked on racks so that 
the gas mixture can have access to all sides of the pots or the soil balls. 
(iii) The fumigation shall be done in a tight chamber with gas-tight doors. 
(iv) After the chamber is loaded and closed, the appropriate amount of 
methyl bromide shall be volatilized therein, and the air-gas mixture shall be 
2 Superseding §§ 801.72-5a and b. 
