51 



Mr. Scott said that ke had made similar experiments in Georgia 

 looking to the control of the San Jose scale and had obtained gratify- 

 ing results. He had nsed a 25 per cent strength of crude oil with 

 water on peach and plum trees, sprajang in the winter time, with the 

 results that the scale had been effectually destroyed and the trees 

 not damaged. He had found, however, that the undiluted crude oil 

 killed peach trees outright, as did also refined kerosene. He had 

 used the Pennsjdvania crude oil registering 4:3" on the Baume oil 

 scale. The high price of the crude oil, as purchased from the Stand- 

 ard Oil Companj", made it more expensive than refined kerosene, and 

 for that reason, and because of its variable character, he did not rec- 

 ommend it for general use. For three years he had used a 20 per 

 cent strength of kerosene with Avater as a remedy for San Jose scale, 

 and the results were all that could be expected from the application 

 of au}^ spray whatever. He said that at the recent meeting of the 

 Georgia State Horticultural Societj^ the general expression from the 

 fruit growers was to the effect that the San Jose scale was no longer 

 feared since the kerosene treatment had x3roved so effective. He said 

 that infested orchards of more than 100,000 trees each were being 

 successfuU}^ treated. 



Mr. Felt suggested that perhaps the San Jose scale did not become 

 80 dormant in Georgia as it did farther north, which would explain 

 the successful use of comparatively weak applications of insecticides. 



Mr. Scott replied that this Avas true, as he had frequently found 

 the scale breeding on warm days in midwintCi. 



Mr. Kellogg expressed a surprise that the price of crude petroleum 

 should be so high, and suggested that it might be obtained at a 

 reasonable price direct from the oil wells. 



Mr. Gillette then presented the following paper: 



NOTES ON SOME COLORADO INSECTS. 



By C. P. Gillette, Fort Collins, Colo. 



Nysius minutus has been unusually abundant in portions of Colo- 

 rado this summer, and numerous inquiries have been received con- 

 cerning it. 



My attention was first called to it hj being told that it was destroy- 

 ing the strawberries upon the experiment station grounds. A visit to 

 the strawberry patch was made at once and the bugs found in large 

 numbers upon leaves, fruit, and blossoms, but most numerous upon 

 fruit, both green and ripe. They were not giving special attention to 

 strawberries, however, as the}" were much more abundant on some of 

 the weeds growing between the rows, and particularly were thej^ abun- 

 dant upon wild mustard and Monolepis nuUallii, wilting the plants to 

 the ground. Plants of yellow dock, and even Helianthus, were liter- 

 ally covered with them. In fact, hardly any species of jDlant in the 



