APPLE OR CODLIN GRUB TRAP. An exceedingly ingenious and effective method of alluring that obnoxious pest, the Apple Grub. The trap consists of two, three, or more thin pieces of board, 12in. to 20in. in length, and 2in. to 4in. wide, with a screw (a) through their centre. The screw must be long enough to be firmly driven into the trunk of the tree, so as to hold the boards in position. Small slips of wood (b) are inserted between the boards, to keep them sufficiently open to allow of the entry of the grubs, as shown at d. The boards are cut on each side of the screw, as at c, to facilitate their separation when fastened together by the silken threads of the grubs, and to better expose the latter when the trap is opened. This handy trap, which is of American origin, is very cheap. A great number of them may be collected with little trouble, submitted to a killing heat, and replaced again; and they can be used either on the ground or on the trees. As regards killing the grubs when caught, Mr. Weir, the inventor, says: "The quickest and best way is to have a large tin pan, bent in on one side, so as to fit closely to the trunk of the tree. When you reach the tree, drop upon your knees, place the depression in the pan against the trunk of the tree, hold it there by pressing your body against it, and you have both hands free to open the trap. When opening it, many of the pupae or chrysalids will fall into the pan. The trap must be turned clear around, as many will be found between it and the bark. A person will open and kill the worms in from four hundred to eight hundred traps in a day."