Taking the density of iron to be 7.7, the factor for reducing the loss in ergs per c.cm.
When mixed with sodium carbonate and heated on charcoal in the reducing flame lead salts yield malleable globules of metal and a yellow oxide-ring.
The application of an infusion of violet leaves was at one time believed to have the power of reducing the size of cancerous growths, but its use is now discredited.
In order to save arithmetical labour it is convenient to be provided with conversion factors for reducing variously expressed results to the standard form.
Since t horse-power= 746 watts, and r ton = 2 240 lb, the factor for reducing horse-power per ton to watts per lb is 746/2240, or just 1/3.