25 



Cluster S. 



Unfertilized eggs, . 

 Eggs with dead embryos, 

 Eggs apparently alive, . 



Total, 



Unfertilized eggs, . 

 Eggs with dead embryos. 

 Eggs apparently alive, . 



^ f = 2.14 per cent., or about 2 per cent. 

 229 =97.86 per cent., or about 98 per cent. 



234 eggs. 



Cluster 4- 



Total, 



Unfertilized eggs, . 

 Eggs with dead embryos. 

 Eggs apparently alive, . 



Total, 



o r = 3.17 per cent., or about 3 per cent. 

 122 =96.83 per cent., or about 97 per cent. 



126 eggs. 



Cluster 5. 



61 

 32 f = 12.93 per cent., or about 13 per cent. 



256 =87.07 per cent., or about 87 per cent. 

 294 eggs. 



Averaging these 5 clusters we get this result : — 



Dead eggs. 



Eggs apparently aUve, 



Total, 



15 = 7.77 per cent., or about 7.5 per cent. 

 178 =92.23 per cent., or about 92.5 per cent. 



193 eggs. 



We notice also that the egg clusters from this place, where the wilt 

 developed naturally, are considerably less than the normal size, about 

 2y2 clusters being equal to 1 normal cluster. This, and the fact that 

 only 7.5 per cent, of the eggs would fail to hatch, while in the experi- 

 ment 17 per cent, were dead, is probably due to the fact that upon 

 this southern slope Flacherie appeared late and spread but slowly. 



North Carver^ Mass. 



Division Agent, John A. Faklet; Local Superintendent, Herbert F. Atwood. 



This locality was visited on May 9, 1910, with the inspector of the 

 southern districts of the State of Massachusetts, Mr. Norman Souther 

 of Bridgewater, to find suitable places for the intended experiments. 

 The gypsy moth does not occur here in such enormous numbers as in 

 the northern parts of the State, but I wished to have some experiments 

 at places where the gypsy moth has but recently gained a foothold. 



An isolated wood of about 2 acres, situated somewhat southwest from 

 Makepeace's cranberry bog, was found to be a suitable place. It con- 

 sists of pines about forty years old and of oaks about twenty to twenty- 

 five years of age, with considerable brush. 



