1933] SERVICE AND REGULATORY ANNOUNCEMENTS 179 
vice concerning care in the use of cyanide, and preventing injury to the bulb.s 
■by treating at the proper time of year. In cases where the administrative in- 
structions use the term " should " inspectors are justified in making exceptions 
where such exceptions seem necessary and where the grower has a full realiza- 
tion of the dangers or disadvantages involved. 
INSPECTIONS 
The authority of inspectors to refuse to make eel worm inspections in 4 " weedy " 
fields relates to instances where the fields are so filled with weeds and grass as 
to prevent the inspector from finding eelworm infestations satisfactorily. 
In cases where the grower or his employees are roguing the field or sorting 
out culls in dormant bulbs, in advance of the inspector, the rogues and culls 
are to be held for the inspector's examination if he desires. Such rogues and 
culls should be destroyed as promptly as possible after examination. One 
method of accomplishing such destruction is burying the bulbs deeply and 
covering them with quicklime and then with soil. 
Dormant inspection for eelworm is especially important where certain 
stocks are under suspicion, but where the inspector has failed to find eelworm 
infestation in the field. Some of these conditions are: 
(1) Where the lot of bulbs concerned was given hot-water treatment the 
previous year ; 
(2) Where the bulbs were produced by a grower whose premises have been 
known to be infested in previous years ; 
(3) Where the bulbs were produced in the vicinity of another variety in 
which infestation was discovered; or 
(4) Where through purchase or otherwise the complete previous history of 
the stock concerned is unknown. 
If the number of inspectors in a State or district is not large enough to 
enable them to examine carefully 10 percent of every lot of dormant bulbs 
within the State or district, such dormant inspection may be limited to bulbs 
of the four special classes named above. 
Dormant inspection is not required where infestation has already been found 
in the same lot in the field, as such bulbs must be treated in any event. 
The Bureau has been asked whether there are not some conditions under 
which the inspector is justified in dividing unusually large blocks of a single 
variety, requiring treatment of an infested portion, and, in the absence of 
visible eelworm infestation, certifying the remainder as free from infestation 
without treatment. Such division is justified only when there is definite evi- 
dence that the eelworm infestation discovered in the infested portion of the 
block is both (a) extremely scarce, and (b) definitely of the current season's 
origin. A current season infestation in one end of a block may result from 
the flow of irrigation water from an infested variety past the ends of the rows 
of a previously uninfested variety. Where such infestation is very slight, where 
the location is one on which bulbs had not previously been grown, and where 
reasonable care has been used to avoid carrying infestation during cultivation 
and at other times on tools and the clothing of laborers, the inspector is au- 
thorized to make provision for the digging, separate handling, and treatment of 
the infested portion of the field. If no eelworm is found on dormant inspection 
in the apparently uninfested sections, permits may then "be issued for the latter 
without requiring treatment. 
In no case in which either the bulbs or the premises have been infested 
before — whether the bulbs were treated or not — could such a division of a 
block be authorized. Experience has shown that in such cases the finding of 
infestation is ordinarily due to a carry-over from previous years, and the 
inspector, if finding one or more infested bulbs in the block, is compelled to 
assume that such carry-over has taken place in a larger number of narcissus 
than actually show spikkels. 
TREATMENTS FOR BULB FLIES 
The construction details given for fumigation chambers are mandatory except 
that several different types of construction are indicated and the growers may 
choose between them. 
In addition to the warnings outlined in circular B.P.Q.— 337, care must also 
he taken to avoid explosion. Such explosion has occurred where an electric 
