1894-] ENTOMOLOGICAL NEWS. 223 



localities the remedy would be of no use at all; but perhaps in Kansas, 

 and in some of the adjoining States better success may be anticipated. 

 One very important point is made clear in the present report, and that is, 

 that the fatal disease is the white fungus or Sporotrichum globulifernm. 

 It will be extremely valuable to learn from other States where these ex- 

 periments have been tried what the success has been. In this connection 

 it is interesting to note Dr. Forbes' words in Bulletin No. 33 of the Illinois 

 Experiment Station concerning the use of contagious diseases. He says: 

 " the results of this method are, however, not sufficiently certain to war- 

 rant an entire dependence upon it, and it should be made one feature 

 only o^a general and concerted campaign." The experiment in Illinois 

 will be watched with a very great deal of interest, and will be of great 

 use as determining the applicability of this method in the Mississippi 

 Valley under circumstances widely differing from the state of affairs in 

 Kansas. In Iowa Prof. Osborn has made experiments during the present 

 year, the outcome being decidedly unfavorable because of dry weather. 



A New Insecticide. Under this caption Dr. C. H. Fernald calls atten- 

 tion to arsenate of lead in Bulletin No. 24 of the Hatch Experiment 

 Station of the Massachusetts Agricultural College, and he gives in detail 

 experiments made on the killing power of this substance on the tent 

 caterpillar and the larva of the potato beetle. He finds it sufficiently 

 effective at the rate of one pound in one hundred and fifty gallons of 

 water, while no injury to foliage appeared where it was used at the rate 

 of one pound in four gallons of water, an advantage which no other ar- 

 senical mixture can boast of. The materials, acetate of lead and arseuate 

 of soda are cheap, and the insecticide is prepared by putting eleven ounces 

 of the former and four ounces of the latter into a hogshead containing 

 150 gallons of water. It will be seen at once that, if the new material 

 will do what is claimed for it, it possesses many advantages over Paris 

 green and London purple. It is certainly well worth a thorough trial. 



Notes and. 



ENTOMOLOGICAL GLEANINGS FROM ALL QUARTERS 



OF THE GLOBE. 



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THE WHISTLING TREE. A species of Acacia which grows very abun- 

 dantly in Nubia and the Soudan is also called the "whistling tree" by the 



