Mackenzie's Ten Thousand Receipts

Ten thousand receipts from the great Victorian household compendium — cookery, brewing, dyeing, gilding, fireworks, medicine, farriery and the rest of the useful arts, in one volume.

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Thermometric Scales

The two natural points on the thermometric scale are the temperature of boiling water (at 30° in bar.), and that of melting ice. The latter is 0 on the Centigrade and Reaumur scale, 32° on Fahrenheit. The former is 100° on the Centigrade, 80° on Reaumur's, and 212° on Fahrenheit's.. Hence 100° C. 80° R. 170° Fahr. To reduce Reaumur degrees to Fahrenheit, multiply by 9, divide by 4, and add 32 To reduce Centigrade to Fah. renheit, multiply by 9, divide by 5, and add 32.

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