1939] 
SERVICE AND REGULATORY ANNOUNCEMENTS 
17 
Agriculture or any of its employees in the event of injury resulting from the use 
of the fumigant. A list of plants which have been treated with success experi- 
mentally will be furnished those interested in applying the treatment. 
Caution. — Methyl bromide is a gas at ordinary temperatures. It is a poison, 
and the operator should use an approved gas mask when exposed to the gas 
at concentrations used in fumigation. The plants in the fumigation chamber 
should be well aerated by blowing air through them, and the room adequately 
ventilated before it is entered. 
Avery S. Hoyt. 
Acting Chief, Bureau of Entomology and Plant Quarantine. 
ANNOUNCEMENTS RELATING TO MEXICAN FRUITFLY QUARANTINE 
(NO. 64) 
TEXAS VALENCIA ORANGE HARVEST EXTENDED TO JUNE 15, 1939 
[Press notice] 
January 27, 1939. 
The season for harvesting Valencia oranges under the Mexican fruitfly quar- 
antine regulations, which apply to the Texas counties of Brooks, Willacy, Cam- 
eron, and Hidalgo, has been extended to include June 15, Lee A. Strong, Chief 
of the Bureau of Entomology and Plant Quarantine, announced today. The 
harvesting season normally closes, under the quarantine, on April 30. 
Valencia oranges are not preferred hosts of the fruitfly, Dr. Strong stated, 
and are rarely found infested with the flies. Intensive inspection can be made 
of the groves during the additional spring season in which the oranges remain 
on the trees, and should any infestation of the fruitfly be discovered, he stated, 
it will necessarily require the immediate enforcement of such conditions as may 
be necessary to prevent its dissemination through the interstate movement of 
the fruit. 
The extension was announced after consultation with the Texas State De- 
partment of Agriculture and is concurred in by J. E. McDonald, commissioner 
of agriculture. Quarantine officials of the State Department of Agriculture of 
Texas and of the United States Department of Agriculture anticipate the same 
cooperation heretofore extended in this work by growers and packers of the 
lower Rio Grande Valley. 
The modification in no way affects the close of the harvesting season for 
grapefruit which is now set at April 30, under the quarantine. 
B. E. P. Q. 487. 
ADMINISTRATIVE INSTRUCTIONS— MODIFYING THE RESTRICTIONS OF THE MEXI- 
CAN FRUITFLY QUARANTINE BY EXTENDING THE HARVESTING SEASON ON 
VALENCIA ORANGES FROM APRIL 30 TO JUNE 15, 1939 
January 27, 1939. 
Under authorization vested in the Chief of the Bureau of Entomology and 
Plant Quarantine in the third proviso of Notice of Quarantine No. 64 (sec. 
301.04), it having been determined by me that a modification may be safely 
made without increasing the risk of spread of the Mexican fruitfly, section A 
of regulation 7 supplemental to this quarantine is hereby modified to extend 
the harvesting season for Valencia oranges to the close of June 15 for the 
year 1939, provided conditions of infestation do not necessitate an earlier 
closing date. 
The host-free period for Valencia oranges, under this modification, will begin 
June 1G and continue to August 31, 1939, inclusive. 
This modification does not affect or alter the harvesting season for grape- 
fruit which closes, under the conditions of the above regulation, on April 30. 
(Sec. 301.G4a, issued under the authority contained in sec. 301 .04.) 
• Lee A. Strong, 
Chief, Bureau of Entomology and Plant Quarantine. 
144804—39 3 
