. Documentary journal of Indiana 1905 . Fig. 5. Work of timber worms iu oak. a. Work of oak timber worm. b. Barked surface, ctimber worm and work. c. Sapwood. Oak timber timber worm (Tlylocaetus lugubris). Bark. d. Sapwood(Eupsalis minuta). by felling timber, all leave the tender sapwood open and unpro-tected from the attacks of destroyers of every kind. A great majority of the borers working upon the oaks enteredclose to the ground. Indeed, aboAe ten feet we seldom found theouter l>ark pierced. Single trees standing in the open were asbadly infected as those in the heaviest fo
. Documentary journal of Indiana 1905 . Fig. 5. Work of timber worms iu oak. a. Work of oak timber worm. b. Barked surface, ctimber worm and work. c. Sapwood. Oak timber timber worm (Tlylocaetus lugubris). Bark. d. Sapwood(Eupsalis minuta). by felling timber, all leave the tender sapwood open and unpro-tected from the attacks of destroyers of every kind. A great majority of the borers working upon the oaks enteredclose to the ground. Indeed, aboAe ten feet we seldom found theouter l>ark pierced. Single trees standing in the open were asbadly infected as those in the heaviest forest, but their proximityto tlie thick woods easilv accounts for this fact. The older oaks. State Board of Forestry. 145 wliicli had not been burned or scai-red were seldom if ever touchedby borers or bark eaters, the greatest damage being done to gTowthsfrom two to six inches in diameter. (Figs. 3, 4, 5, and 6.) The leaf injuries comprise one of the greatest source? of danger
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