40 BUREAU OF ENTOMOLOGY AND PLANT QUARANTINE [April-Jim* 
(5) When the fruits and vegetables other than onions and potatoes, moving 
via refrigerator car from the State, District, counties, election districts, or 
city listed in paragraph 1 (ii) of this regulation, have been inspected and 
loaded in a manner to prevent infestation, in a refrigerator car with closed 
or adequately screened doors and hatches, which car prior to loading has been 
determined by an inspector as thoroughly swept and cleaned by the common 
carrier in a manner to rid it of infestation. During the interval between 
cleaning. and loading such refrigerator car must be tightly closed and sealed. 
(6) When the onions or potatoes moving via refrigerator car from the- 
State, District, counties, election districts, or city listed in this regulation 
have been fumigated in the car, when deemed necessary in the judgment of 
the inspector and when the doors and hatches of the car have been tightly 
closed or adequately screened under the supervision of an inspector. 
Regulation 6. Restrictions on the Movement of Nursery and* Ornamental 
Stock 
section a. control of movement 
Nursery and ornamental stock as defined in regulation 1 shall not be 
moved or allowed to be moved interstate from the regulated areas to or through 
any point outside thereof, unless a certificate or permit shall have been issued 
therefor by the inspector except as follows : 
(1) True bulbs, corms, and tubers, when dormant, except for storage growth, 
and when free from soil, are exempt from the requirement of certification, 
except that this exemption does not apply to dahlia tubers. 
(2) No restrictions are placed on the interstate movement of nursery and 
ornamental stock imported from foreign countries when reshipped from the 
port of entry in the unopened original container and labeled as to each con- 
tainer with a copy certificate of the country from which it was exported, 
a statement of the general nature and quantity of the contents, the name and 
address of the consignee, and the country and locality where grown. 
(3) No restrictions are placed on the interstate movement between October 
16 and June 14, inclusive, of cut flowers, aquatic plants, and of portions of 
plants without roots and free from soil (such as branches and twigs of trees 
and shrubs, scions, Christmas trees, holly, laurel, and sphagnum moss). 
(4) No certificate or permit will be required for the interstate movement of 
nursery and ornamental stock when transported by a common carrier on a 
through bill of lading either from an area not under regulation through 
a regulated area, or from a regulated area through a nonregulated area to 
another regulated area. 
SECTION B. CONDITIONS GOVERNING THE ISSUANCE OF CERTIFICATES AND PERMITS 
For the purpose of certification of nursery and ornamental stock, nurseries, 
greenhouses, and other premises concerned in the movement of such stock will 
be classified as follows : 
(1) Class I. — Nurseries, greenhouses, and other premises concerned in the 
movement of nursery and ornamental stock on or within approximately 500' feet 
of which no infestation has been found may be classified as class I. Upon 
compliance with the requirements of subsection (6) of this section, nursery and 
ornamental stock may be certified by the inspector for shipment from such 
premises without further inspection, and without meeting the safeguards pre- 
scribed as a condition of interstate shipment of plants originating in nurseries 
or greenhouses of class III. 
(2) Class III. — (a) Nurseries, greenhouses, and other premises concerned in 
the movement of nursery and ornamental stock on which either grubs in the 
soil or one or more beetles have been found, will be classified as class III. Such 
classification also may be given to nurseries, etc., in localities known to be 
generally infested where one or more beetles or grubs are found in the imme- 
diate proximity (within approximately 500 feet) of such nurseries, etc., on 
adjacent property or properties. In the case of nursery properties, under 
single ownership and management, but represented by parcels of land widely 
separated, such parcels may be independently classified either as class I or 
class III upon compliance with such conditions and safeguards as shall be re- 
quired by the inspector. Similarly, unit nursery properties, which would other- 
wise fall in class III, may be open to subdivision, for the purpose of rating such 
