143 



The cotton batting" beneath the paper strip was necessary to 

 keep the canker-worm moths from crawling- up behind the paper 

 where the roughness of the bark would g'ive them passag-eway. 



On the g-rounds of the Institution for the Deaf and Dumb were 

 approximately four hundred trees to be banded, the diameter 

 varying- from fourteen inches to three and a half feet. Fifty of 

 the trees were of this larg-est size, but the g-reater part of the four 

 hundred averaged two to two and a half feet throug-h. The cost of 

 the operation on these trees'was kindly g-iven us by the officials as 

 follows: 



222 lbs. printers' ink, at 5c $1 1 . 10 



7 rolls of tarred paper 7.50 



103 rolls cotton batting 4.90 



10 lbs. twine i.oo 



Car-wheel oil 25 



9 days' labor at $1.50 13 • 5° 



Total cost, $38.25, or appro.ximately 10 cents a tree. 



Inquiry made by Mr. Titus in January, 1902, broug-ht out the 

 fact that the canker-worms were first seen at Jacksonville in 1899, 

 on the county fair g-rouuds, a half-mile west of the Institution for 

 the Deaf and Dumb. Their prog-r.'ss from this place carried them 

 to the eastward of this institution in 1900, and by 1901 they had 

 reached the city square, three quarters of a mile farther east, and 

 the g-rounds of the Insane Asylum still farther to the east and 

 south. 



At Decatur, Illinois. 



In consequence of reports of injury to elms at Decatur, Illinois, 

 a visit was made to that place by Mr. Titus May 22, 1902. In 

 Fairview Park he found the leaves of the elms badly eaten by 

 canker-worms, thoug-h the trees were not defoliated. The custodian 

 of the park reported that this was the second season of this injury, 

 little having- been seen in 1901 and that not on all the trees. In 

 1902, however, practically none of the five hundred elm-trees in 

 the park were free from attack. 



These elms varied in size from 15-inch trunks to 2>3 feet in 

 diameter. The elms elsewhere in the city seemed also to have 

 been infested locally, but not seriously or very g-enerally so as yet. 



Measures to protect the elms will doubtless be taken in this 

 town next year, at least in the public parks. 



In the Sangamon Forests. 

 On the the 23d of May a trip was made by Mr. Titus to a 

 woodland area of several hundred acres lying- along the Sanga- 



