84 BOARD OF AGRICULTURE. [P. D. 4. 



mately 30,000 were pulled up, of which 10,000 were diseased. 

 All infected cultivated Ribes within this area were also re- 

 moved. Pine infections were present on large native trees and 

 on small growth. Wherever such cases were found the whole 

 tree or the diseased parts were removed as was deemed neces- 

 sary. 



Similar work was performed at Ipswich, Topsfield and 

 Hamilton and also at one place in Newburyport. In this 

 region an area of about 40 square miles was thoroughly worked, 

 and wild Ribes, aggregating in round numbers 17,500 plants, 

 were pulled up. Of these, about one-third showed blister rust 

 infection. Pine infection was found quite plentiful, and several 

 thousand trees and parts of trees were destroyed in an attempt 

 to put the trees in such a condition that there would be no 

 immediate danger of their spreading the disease. 



During the summer the rust was found to be present along 

 the New York-Massachusetts State line, and in co-operation 

 with the New York State authorities an attempt was made to 

 check its further spread. Investigation showed that there were 

 practically no wild Ribes along the State line in the town of 

 Mount Washington. From this town north along the State 

 line a strip 2 miles wide by 25 to 30 miles long was thoroughly 

 covered by a New York and a Massachusetts crew. In round 

 numbers, 11,200 wild Ribes were removed from the Massachu- 

 setts side of the line, and of these 2,380 were diseased. This 

 work was discontinued after three weeks, as it became neces- 

 sary to transfer all the men from elimination work in order to 

 complete the scouting of the State. 



During the year 250 estates and pine plantations were ex- 

 amined, 81 of which had infected pines. Some of these places 

 were previously known to be diseased, while several others were 

 discovered this year. Wherever diseased pines were found they 

 were removed, and the surrounding country for a radius of 500 

 yards was thoroughly examined and all wild Ribes pulled up. 

 A letter was sent to all the tree wardens in the State requesting 

 the names and addresses of owners of planted pines in their 

 respective towns. Many replies were received, and every plant- 

 ing learned of in this way was visited ancj inspected. In addi- 

 tion, several pine plantations not previously known to the in- 



