NOTES. 513 



or certifying officer of each State accept at its face value the statements made in cer- 

 tificates duly granted under the laws of other States, so far as the laws of his own 

 State admit, unless information at hand creates a reasonable doubt as to the regu- 

 larity of the certificate or its application. 



The discussion of the second topic, Exchange of Communications with Reference 

 to Receipt of Diseased Nursery Stock Originating in Other States, was brief, as all 

 present appeared to be of the same mind, viz, "that the inspectors of the several 

 States should freely and frankly exchange communications with regard to nursery 

 infestation, and that each should notify every other of such cases of infestation and 

 attempts at evasion of the laws as might from time to time come to his notice." 



The third topic related to Interstate Cooperation for the Control of Horticultural 

 Pests whose Area of Distribution Extends Across State Lines. In the discussion 

 several cases were cited in which it was shown that cooperation was necessary to 

 2:)roduce the desired results, and this view was expressed in the resolution adopted, 

 which gave the preference in the treatment of any particular pest to such cases. 



Upon the question. Is it Desiral)le that Nurserymen Should Pay Any Part or All 

 of the Expenses of Nursery Inspection Required by Law, Either Direct or as a Fee 

 for a Certificate? considerable difference of opinion was expressed, some holding 

 that there should be no fees; others that the nurserymen should pay small fees, as 

 in the case of fertilizers, etc. ; others that they should take out a license at a small 

 fee, as a matter of record for the inspector. The resolution adopted, however, was 

 to the effect that the nurserymen should not be required to pay the expense of the 

 ordinary inspection of nursery stock. On the related topic. Is it Desirable that the 

 Entire Cost of Insecticide or Fungicide Measures Required by Law Should be Borne 

 by the Owner of the Affected Property? the consensus of opinion was that the State 

 should not bear the cost of the treatment of private premises, but that the entire 

 cost should ])e borne by the owner. 



Various insi^ectors reported upon nursery pests in their respective States whose 

 continued presence will prevent the certification of a nursery. Mr. Smith's practice 

 in New Jersey w-as to withhold certificate from nurserymen whose premises were 

 fountl infested with San Jose scale, at least until all infestation was ehminated; stock 

 actually infested with black knot was not certified; yellows could not be detected 

 on nursery stock and was hardly considered as a factor in the inspection; crown gall 

 was inspected for, so far as possible, after the stock was dug, and visibly diseased 

 plants discarded; stock badly infested with woolly aphis was destroyed; the occur- 

 rence of ^'l.s^j/fZioiiw ancylus, .1. forbcxi, and Chionaspis furfurus would not debar the 

 stock; the occurrence of any scale insect on imported stock would prevent certifica- 

 tion, and the presence of Diaspis pyricola especially would act as a bar. 



Mr. Fernald reported that in Massachusetts no certificate would be granted so long 

 as the San Jose scale, Diaspis jjcntagona, Aspidiotus ostrea'formis, gypsy moth, brown- 

 tail moth, yellows, rosette, or black knot was found infesting the stock. Crown gall, 

 he stated, had not so far been found in Massachusetts. 



Mr. Gossard reported that it was his practice in Florida to withhold certificate 

 from the owner of premises infested with San Jose scale until the jjroper steps had 

 been taken to get rid of the pest by fumigation or otherwise. Diaspis pentagona 

 occurred in the State, but so far had not been found in the nurseries. Citrus 

 plants were commonly infested with various scale insects, but no definite action had 

 yet been taken with respect to such cases. White-fly was so generally distributed 

 as to render restrictive measures against it impractical, but treatment was recom- 

 mended. In cases of crown gall the owners were instructed to destroy all affected 

 plants, and root-knot infestation was also rejected. 



Mr. Hamilton stated that the prevailing rule in Pennsylvania was to grant a 

 certificate when the nursery was found apparently free from San Jose scale, and to 

 withhold the certificate when this pest occurred. Mr. Butz, of the same State, 



