APPENDIX. xxix 



this wall had the eggs not been destroyed. The trunks of some 

 of the trees were actually yellow with egg-clusters. Though the 

 insects were not distributed equally over the entire section, there 

 were many places where eggs were found in sufficient numbers to 

 have let loose a destroying host upon the entire neighborhood. A 

 large per cent, of the yards within one-half mile of the Trouvelot 

 house were thus infested. 



The yard of the Anderson Pressed Brick Company includes a 

 part of the wooded section hereinbefore described. At the present 

 time the eastern portion of the yard is covered with a scattered 

 growth of young oaks and bushes. Near the buildings and 

 attached to them on the east are several sheds in which are piled 

 many thousands of the finest quality of pressed brick. East of 

 these are several detached sheds also filled with brick. Near 

 them is a pile of broken bricks about thirty yards in length, 

 fifteen feet in width and ten feet in height. These sheds and the 

 brick-bat pile are among the oaks, the pile being heaped against 

 some of the trees. When the work in the brick yards was begun 

 by the commission on March 21, 1891, the entire premises were 

 infested by the gypsy moth. About three hundred thousand 

 bricks were stacked in the sheds and two hundred thousand out- 

 doors under the trees. The crevices between these bricks gave 

 opportunity for the moths to deposit their eggs. The bricks 

 under the sheds near the buildings had not been much frequented 

 by the moth, but three-fifths of those under the trees were more or 

 less covered with eggs. The egg-clusters were found on the 

 ground and under the floors, on the sides and under the roofs of 

 the sheds, under the stumps and about the roots of trees, on their 

 trunks and limbs and in almost every conceivable sheltered place. 

 As the infested bricks were likely to be transported in all direc- 

 tions, the danger of the distribution of the moth by this means 

 appeared great. A capable man was at once stationed in the yard 

 to examine all bricks sent out. The finest quality of bricks sent 

 out previous to this time had been shipped to a distance. Most 

 of them were used for fireplaces and were cleaned by the brick 

 company before shipment, and in this way all eggs were probably 

 taken off. Many localities to which bricks had been shipped were 

 afterwards examined. The work in this yard was pushed with 

 the greatest energy. Two hundred and thirty-two thousand one 

 hundred and ninety-five bricks were examined, and all those 

 infested were cleaned and the eggs burned. The shed most badly 

 infested was burned. The floors, roofs, etc., of the others were 

 torn up wherever necessary, and the eggs taken from them. 

 Some of the trees near the shed wei-e cut down and burned. The 



