PART IV. 5 
on his return to South Africa, to ascertain what action the Union 
Government would be able to take and to inform the Agricultural 
Department of Kenya what measures would be possible. 
In this connection, Mr. Holm stated that he would write officially 
to the South African Department of Agriculture, informing them that 
this question had been brought up by the Conference and that he had 
asked Mr. Fuller to make further enquiries on his return. 
Mr. HOLM observed that even if special regulations were 
introduced to prevent the spread of Codling Moth to Kenya, there 
would seem to be a possibility, if similar regulations were not in force 
in Tanganyika, that the Codling Moth might be introduced via 
Tanganyika. He would like the opinion of the entomologists as to the 
possibility of the moth establishing itself in Tanganyika on native 
plants and then spreading to Kenya. 
It was generally thought by the Conference that such spread 
would be improbable but that it was impossible to be definite on this 
point until more information was available as to the host plants: so 
far, no instance of Codling Moth on native vegetation had been 
recorded. 
Mr. KIRKPATRICK expressed the view that the probability of 
developing an export trade in apples from Kenya should be the 
deciding factor in this discussion. If such export were probable, the 
risk of introduction of the pest was not justified and importation 
should be prohibited. If, on the other hand, it were improbable that 
an export trade would be established, it was not fair to the present 
generation to deprive them of such fruit. 
It was generally thought by the Conference that there were 
prospects of an apple industry being established in certain areas in 
Kenya; such being the case, every precaution should be taken to 
minimise the risk of the introduction of the Codling Moth. 
MEASURES SUGGESTED FOR THE PREVENTION AND 
SPREAD OF PLANT DISEASES. 
Mr. VAN DEN ABEELE said that, in order to prevent the 
spread of plant diseases, it appeared desirable that the transport of 
seed from one Colony to another, or even from one part of a Colony 
to another part, should be so regulated as to make examination and 
perhaps disinfection obligatory under the control of a competent 
service of the country of origin, whose certificate, valid for three 
months, should be attached to each invoice. 
He suggested that the Conference might discuss the methods of 
disinfection, and make suggestions for the different botanical species 
(cotton, maize, ete.) It was most important that all kinds of seeds 
should, on importation, be examined by the special service of the 
importing country, and that the results of investigation should be 
communicated to the country of origin, together with any enquiries 
which might be necessary. (Platyedra gossypiella was recently found 
on cotton seed imported from Egypt.) 
(The above was circulated as a note under T.C.(C)Ag.20.) 
Mr. FULLER thought that no efficient method of protection 
could be evolved by means of certificates from the exporting countries. 
From experience in South Africa he had no faith in any certificates 
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