EIGUTILENTH ANNUAL MEETIXG. 51 



spection might be made vohintary or obligator}-, as would best 

 meet the situation. 



2nd, we already have a careful inspection of our nursery 

 stock by the State entomologist, but this does not necessarily 

 reveal the presence of the yellov^'s. In point of fact, compara- 

 tively few nursery trees showing yellows are found by nur- 

 sery inspectors, either here or elsewhere, and there seems to 

 be a growing conviction that careful inspection of the young 

 orchards for the first one or two years after setting out should 

 be made. This is perhaps a thing that the owner himself 

 should perform. At any rate, all suspicious trees, either young 

 or old, should be promptly removed and destroyed. 



3rd, in order to advance our knowledge concerning this 

 disease, especially with reference to its spread in the orchard, 

 the efficacy of the prompt removal of trees, and the relation 

 of the disease to weather conditions, I advocate the selection of 

 half a dozen young orchards in the State and their inspection 

 at least three times annually for a series of five to ten years by 

 the horticulturists of the Storrs College and Station and the 

 entomologist and botanist of the New Haven Station, and that 

 definite data along determined lines be kept of each individual 

 tree. 



Discussion. 



Question : Do they have the yellows or rosette in Cal- 

 ifornia? 



Dr. Clinton : No. 



Mr. Fenn : I understand the gentleman carried the idea 

 that the calico disease of tobacco was carried from plant to 

 plant by the hands, or could be so carried. Is that correct? 



Dr. Clinton : I can take a calicoed plant, handling it 

 so as to get a little juice on my hands, then touch another plant, 

 perfectly healthy, and later on that healthy plant will calico, 

 not only the leaves that I touched, if not too old, but also those 

 that were not touched. 



Mr. Fenn : Two or three years ago Professor Shame! 

 advocated a notion that calico was derived or sprang from 



