1938] SERVICE AND REGULATORY ANNOUNCEMENTS 47 
subdivisions in classes I or III, when in the judgment of the inspector such 
action is warranted by recent and scanty infestation limited to a portion of the 
nursery concerned: Provided, That the subdivision containing the infestation 
shall be clearly marked by boundaries of a permanent nature which shall be 
approximately 500 feet beyond the point where the infestation occurs. 
(&) Upon compliance with subsections (3) and (6) of this section, nursery 
and ornamental stock may be certified by the inspector for shipment from such 
premises under any one of the following conditions: (i) That the roots shall 
be treated by means approved by the Bureau of Entomology and Plant Quaran- 
tine in manner and by method satisfactory to the inspector; or (U) in the case 
of plants in which the root system is such that a thorough inspection may be 
made, that the soil shall be entirely removed from the stock by shaking or 
washing; or (Hi) that it shall be shown by evidence satisfactory to the inspector 
that the plants concerned were produced in a certified greenhouse. 
(3) Greenhouses of class III may be certified upon compliance with all the 
following conditions with respect to the greenhouses themselves and to all pot- 
ting beds, heeling-in areas, hotbeds, coldf rames, and similar plots : 
(a) Ventilators, doors, and all other openings in greenhouses or coldf rames 
on premises in class III shall be kept screened in manner satisfactory to the 
inspector during the period of flight of the beetle, namely, south of the northern 
boundaries of Maryland and Delaware between June 1 and October 1, inclusive, 
or north thereof between June 15 and October 15, inclusive. 
(b) Prior to introduction into nurseries or greenhouses, sand, if contaminated 
with vegetable matter, soil, earth, peat, compost, or manure taken from infested 
locations or which may have been exposed to infestation, must be sterilized or 
fumigated under the direction and supervision of, and in manner and by method 
satisfactory to the inspector. If such sand, soil, earth, peat, compost, or manure 
is not to be immediately used in such greenhouses, it must be protected from 
possible infestation in manner and by method satisfactory to the inspector. 
(c) All potted plants placed in certified greenhouses of class III and all 
potted plants to be certified for interstate movement therefrom (/) shall be 
potted in certified soil; (//) shall, if grown outdoors south of the northern 
boundaries of Maryland and Delaware at any time between June 1 and October 
1, inclusive, or north thereof at any time between June 15 and October 15, in- 
clusive, be kept in screened frames while outdoors; (Mi) shall, if grown out- 
doors during any part of the year, be placed in beds in which the soil or other 
material shall have been treated in manner and by method approved by the 
Bureau of Entomology and Plant Quarantine to eliminate infestation; and (iv) 
shall comply with such other safeguards as may be required by the inspector. 
(4) Cut flowers and other parts of plants without roots or soil may be certi- 
fied for movement either (a) when they have been inspected by an inspector 
and found free from infestation, or (6) when they have been grown in a green- 
house of class I or in a certified greenhouse of class III and are transported 
under such safeguards as will in the judgment of the inspector prevent infesta- 
tion. (See also sec. A (3) of this regulation.) 
(5) Nursery and ornamental stock originating on or moved from unclassified 
premises may be certified by the inspector under either one of the following 
conditions: (a) That the soil shall be entirely removed from the stock, or (b) 
that the roots shall be treated by means approved by the Bureau of Entomology 
and Plant Quarantine in manner and by method satisfactory to the inspector, or 
(c) that it shall be shown by evidence satisfactory to the inspector that the 
accompanying soil was obtained at such points and under such conditions that 
in his judgment no infestation could exist therein. 
(6) Nurserymen, florists, dealers, and others, in order to maintain their 
•classified status, (a) shall restrict their purchases or receipts <>t* nursery and 
ornamental stock, sand, if contaminated with vegetable matter, soil, earth, 
peat, compost, and manure within the regulated area to articles which have been 
certified under these regulations as to each such article and the said certificate 
shall accompany the articles when moved; (b) shall obtain approval of the 
inspector before such articles are received on their premises or moved from 
the open on their own premises into certified greenhouses; and (e) shall also 
report immediately in writing all purchases or receipts of such articles secured 
from within the regulated area. Nurserymen, florists, dealers, and others 
whose premises are classified as class III shall, in addition, report immediately 
on forms provided for that purpose all their sales or shipments of such articles 
both to points outside the regulated areas and to other classified nurseries 
or greenhouses within the regulated areas. Certification may he denied to any 
8G995— 38 2 
