134 GYPSY AM) BROWN-TAIL MOTHS. [Jan. 



ditiou, and mean either a great loss of the best trees, or a still greater, 

 instead of diminishing, expense in future years. This is particularly 

 true in the Blue Hills. 



The gratitude of the Board is due to your department for your co- 

 operation at many points, to such cities and towns as did a greater 

 amount of work than ever before in the lands surrounding the reserva- 

 tions and parkways, and to many private individuals who incurred great 

 expense to protect neighboring lands. Especial thanks is due, and has 

 been expressed by this Board, to Gen. Samuel C. Lawrence for the 

 enormous expense of time and money which he incurred to protect not 

 only his own woodlands but also those of others and the roadside trees 

 in many places, and also for effective work which he did within Middle- 

 sex Fells in aid of the work being done by this Board. 



It is a duty to urge that the work be continued in every direction, 

 and that it be increased in the heretofore neglected woodlands in the 

 borders of the reservations, particularly about the Blue Hills. 



Thanking you and your assistants for many personal courtesies, I am 

 Respectfully yours, W. B. DE LAS CASAS. 



METROPOLITAN WATER AND SEWERAGE BOARD, BOSTON, Dec. 24, 1906. 



Prof. A. H. KIRKLAND, Superintendent for Suppressing the Gypsy and 

 Brown-tail Moths, 6 Beacon Street, Boston, Mass. 



DEAR SIR : -- In response to your request, I submit the following brief 

 statement regarding the work done by the Metropolitan Water and 

 Sewerage Board during the past year in protecting the property under 

 its charge from the ravages of the gypsy and brown-tail moths. 



The greater portion of the work has been done on the 270 acres of 

 land surrounding Spot Pond, but the gypsy moths have appeared in 

 considerable numbers on the grounds around Chestnut Hill reservoir, 

 along the aqueduct lines in Newton, Weston and Wellesley, and on the 

 grounds surrounding the Weston reservoir. The nests of the brown- 

 tail moths have been found not only where the gypsy moths were present, 

 but also on land around the Sudbury reservoir in Marlborough, South- 

 boron -jli and Framing-ham, around Lake Cochituate, along the aqueducts 

 in Nat irk and Wellesley, and on the grounds about the Wnchusett dam 

 in Clinton. 



During January and February a force of about 25 men was em- 

 ployed on ihe grounds about Spot Pond in painting the egg clusters of 

 the, irypsY moth with a mixture <ii' equal parts of creosote and fuel oil. 

 In March and April (In- I ices were thinned out and underbrush cut on 

 nlnpiit ")() acres of swamp north of the pond, and the trees on 150 acres 

 were M-raped and banded with Tanglefoot. The spraying of the foliage 

 with arscnate of lead began on May 19 and was continued until the 

 first week in July, the area covered being about 110 acres. For this 

 v. MI-],- one steam, one gas and two hand spraying machines, together 



