Abstract: A child safety door lock system includes a door latch device having a main body with a first cavity, a second cavity and a recessed middle section. The middle section is dimensioned for positioning the main body onto the edge of a door. A latch assembly is positioned along the main body and includes two posts that are positioned within the first and second cavities, and a hook that extends outward from the second cavity. A door catch having an opening along the front wall is secured onto the frame of the door. The door catch and door latch are horizontally aligned such that closing the door will position the hook within the opening of the catch to lock the door. The hook is removed from the catch and the door is unlocked by lifting either of the posts.

Abstract: Dutch elm disease is counteracted by injecting elm trees susceptible to, or having such disease, with a composition comprising a water soluble zinc salt dissolved in water and mixed with dimethyl sulfoxide in certain predetermined proportions, preferably applied at a time when the sap is returning to the root system.