30 PLANT QUARANTINE AND CONTROL ADMINISTRATION [April-June 
be governed accordingly. See paragraph 1, section 467, Postal Laws and 
Regulations. 
Very truly yours, 
F. A. Tilton, 
Third Assistant Postmaster General. 
ANNOUNCEMENT RELATING TO GIPSY-MOTH QUARANTINE (NO. 45) 
P. Q. C. A.— 334. May 10, 1932. 
NURSERY STOCK CERTIFICATION UNDER GIPSY-MOTH QUARANTINE 
(Revision of Circulars HB-174 and HB-179) 
Paragraph (b) of regulation 6 supplemental to Notice of Quarantine No. 45 
reads in part as follows : 
" With respect to nursery-grown stock, Federal inspection and the issuance 
of Federal certificates authorizing the interstate movement of nursery products 
will be conditioned on the presentation of a valid State certificate stating that 
the nursery in question has been inspected by a State nursery inspector and 
certifying that it is apparently free from infestation with gipsy and brown-tail 
moths. * * * Whenever any nursery or independent unit thereof in the 
regulated area, or any shipment therefrom, is reported by a State inspector to 
be appreciably infested with either the gipsy moth or the brown-tail moth, or 
whenever such infestation is determined by a Federal inspector on his exam- 
ination of material offered for shipment, further certification for interstate 
movement from such nursery, or independent unit thereof, will be refused until 
such nursery has been freed from infestation and has been again inspected 
and certified by the State to be apparently clean." 
In enforcing the restrictions quoted the term " appreciable infestation " will 
be interpreted to mean such infestation as in the judgment of the inspector 
involves danger that gipsy-moth egg masses may escape attention and be ship- 
ped to uninfested localities. 
The previous practice of automatically refusing further Federal certifica- 
tion immediately upon the discovery of a single egg mass by a Federal inspector 
will be discontinued. 
It will be necessary as heretofore for nurserymen to cooperate with the 
department by effectively cleaning up and spraying the nursery premises and 
adjoining territory where conditions require, and preventing their nurseries 
from becoming subject to infestation. Any laxity in the maintenance of such 
a program or any appreciable establishment of infestation on the nursery stock 
will as heretofore result in the refusal of certificates for interstate movement 
until after the nursery premises have been cleaned up and have been rein- 
spected and recertified by the State nursery inspector. 
Lee A. Strong, 
Chief, Plant Quarantine and Control Administration. 
ANNOUNCEMENTS RELATING TO JAPANESE-BEETLE QUARANTINE 
(NO. 48) 
P. Q. C. A.— 333. 
April 15, 1932. 
SUPPLEMENT NO. 6 TO INSTRUCTIONS TO INSPECTORS ON THE DISINFECTION 
OF NURSERY PRODUCTS FOR THE JAPANESE AND ASIATIC BEETLES 
FIELD TREATMENT WITH CARBON DISULPHIDE EMULSION 
Section D of Circular P. Q. C. A.— 224, as revised on February 8, 1930, by 
Circular P. Q. C. A. — 265, is hereby further revised to read as follows: 
DISINFECTION OF SOIL ABOUT THE ROOTS OF PLANTS 
D. CARBON DISULPHIDE EMULSION — FIELD TREATMENT 
The basis of certification of field nursery plants treated with miscible carbon 
disulphide shall be: (1) That the concentrated stock solution shall either be 
freshly mixed carbon disulphide and castor-oil soap in the proper concentration 
