Bottle Neck

1 . 1 is a top view of a first embodiment of a bottle neck, showing my new design; 1 . 2 is a bottom view thereof; 1 . 3 is front view thereof; 1 . 4 is a back view thereof; 1 . 5 is a perspective view thereof; 1 . 6 is a left side view thereof; 1 . 7 is right side view thereof; 4 . 1 is a top view of a second embodiment of the bottle neck, showing my new design; 4 . 2 is a bottom view thereof; 4 . 3 is a back view thereof; 4 . 4 is a front view thereof; 4 . 5 is a perspective view thereof; 4 . 6 is a right side view thereof; and 4 . 7 is a left side view thereof. The broken lines in the drawings are for the purpose of illustrating portions of the bottle neck and form no part of the claimed design.