33 



Unfertilized eggs, . 

 Eggs with dead embryos, 

 Eggs apparently alive, . 



Total, 



Unfertilized eggs, . 

 Eggs with dead embryos, 

 Eggs apparently alive, . 



Total, 



Unfertilized eggs, . 

 Eggs with dead embryos, 

 Eggs apparently alive, . 



Cluster S. 



h 



g I = 6.94 per cent., or about 7 per cent. 

 134 =93.06 per cent., or about 93 per cent. 



144 eggs. 



Cluster 4- 



^ I = 4.26 per cent., or about 4 per cent. 

 90 =95.74 per cent., or about 96 per cent. 



94 eggs. 

 Cluster 5. 



12 ( ~ ^-^^ P^ cent., or about 8.5 per cent. 

 149 =91.41 per cent., or about 91.5 per cent. 



163 eggs. 



Total, 

 The average of these 5 clusters gives the following result 



Dead eggs, 



Eggs apparently alive, . 



Total, 



9 = 7.08 per cent., or about 7 per cent. 

 106 =92.92 per cent., or about 93 per cent. 



115 



Thus in this locality, also, in which the wilt appeared naturally, the 

 egg clusters were far below the normal size. Examination showed that 

 about 4 of these clusters would be necessary to equal a normal one 

 in size. The estimated sum of 50 clusters, therefore, must be reduced 

 to about 14. Hence, the apparently living eggs which remained amount 

 to about 4 per cent. 



Finally, a forest of about 30 acres was inspected. This is situated 

 at an angle of 45°, and half a mile distant from the two first localities. 

 In this forest, which consists mainly of large pines and oaks, the gypsy 

 moth caterpillars had been present in considerable numbers during 

 the summer of 1909, and were still more numerous during the 

 first part of the summer of 1910. The owners of this place intended, 

 according to the division agent, to cut down the forest, thus preventing 

 a total stripping and decrease of the value of the wood. A powerful 

 ally came to the support of the owners during the latter part of the 

 summer of 1910, in the guise of Flacherie, which cleared up the eater- 

 pillars in a manner that left nothing to be desired. It cannot be deter- 

 mined whether the disease appeared naturally or was spread to this 



