The Philosophical Principles of the Science of Brewing: Containing Theoretic Hints on an Improved Practice of Brewing Malt-liquors; and Statistical Estimates of the Materials for Brewing, Or a Treatise on the Application and Use of the Saccharometer; Being New Editions, Corrected, of Those Treatises, with the Addition of the Use of the Saccharometer Simplified, &c. &c. By John Richardson