Being made of bad conductors, such as wood, paper, or woollen cloth, they will not readily conduct the heat from the kettle to the hand.
"Wisdom is the principal thing; therefore get wisdom: and with all thy getting get understanding."—Proverbs iv.
129. Will a kettle-holder, being a bad conductor, sometimes conduct heat to the hand?
Yes. But so slowly that the hand will not feel the inconvenience of too much heat.
130. Why does hot metal feel hotter than heated wool, though they may both be of the same degree of temperature?
Because metal gives out heat more rapidly than wool, by which it is made more perceptible to our feelings.