This section is from the book "The Boy Mechanic Vol. 2 1000 Things for Boys to Do", by Popular Mechanics Co.. Also available from Amazon: The Boy Mechanic, Vol2: 1000 Things for Boys to Do.
Sometimes it is necessary to fasten a door in a manner to prevent children from opening it, yet so that it is easily opened from either side. This can be done by putting a screw or curtain hook on the inside of the door frame and using a piece of cord long enough to loop over both hooks. A person coming in or out can remove the loop from either side. - Contributed by John A. Cohalan, Philadelphia, Pa.
A floor wax can be made by melting 1 lb. of yellow beeswax in 1/2 pt. of hot, raw linseed oil; then adding 1 pt. of turpentine.