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JOURNAL OF ECONOMIC ENTOMOLOGY 



[Vol. 3 



northern United States and in the elevated mountain regions, repre- 

 sented by the transition zone, would be slightly, if any, infested. In 

 the main, the records of the distribution of the San Jose scale have 

 confirmed this belief. Nevertheless, the scale has, in a number of 

 instances, appeared well into the transition zone as fixed by Doctor 

 Merriam, notably in Massachusetts, in New York, in Michigan and a 

 few other points; but in most of these cases the evidence gained 

 from the relation of other animals and plants would indicate that the 

 transition and upper austral zones were not correctly charted, so that 

 in general the belief in the immunity of the transition zone holds." 

 A comparison of the maps in bulletins 3 and 62, p. 34, shows that 

 the life zones have also been corrected in Wisconsin. According to 

 the former map all that part of Wisconsin south of a line drawn more 

 or less obliquely across the state, from the neighborhood of Milwaukee 

 on the east to near the middle of the state on the west, belongs to 

 the upper austral zone, whereas in the later corrected map only the 

 southwest and southeast corners of the state belong to this zone. The 



Fig 5, Map Showing Counties in Which the San Jose Scale Has Been Found; 

 1 Milwaukee, 2 Racine, 3 Wauliesha, 4 Walworth, 5 Jefferson, 6 Dane, 

 7 Grant. 



following map showing the counties in which the San Jose scale has 

 been found in Wisconsin, indicates that this pest is confined to the 

 southern part of the state. The counties designated by a plus sign 

 are given on the authority of Prof. J. G. Moore, the former nursery 



