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.
A simple way of protecting the fingers against being burned by laboratory vessels in which liquids are boiling or chemical reactions producing great heat are going on, is shown in the sketch. A rather thick cord Or yarn is wrapped around the neck of the vessel in the manner shown, the upper end being drawn through the loop at the top and cut off, and the lower end then pulled out and a knot tied in it close to the windings of the yarn.
Ill: The Ends of the Cord are Held Tightly and the Winding Protects the Hands