1. PROCESS. Milk separated into Butter, Curd, and Whey: instanced in Cow's Milk 562 2. Butter analyzed by distillation 566 3. The Curd of Milk analyzed by distillation 569 4. Whey analyzed 571 CHAP. II. _Of the Substances which compose an Animal Body._ 1. PROCESS. Blood analyzed: instanced in Bullock's Blood 574 2. Flesh analyzed: instanced in Beef 580 3. Bones analyzed: instanced in Ox-bones 583 4. Animal Fat analyzed: instanced in Mutton-Suet 584 5. Eggs analyzed: instanced in Pullet's Eggs 586 CHAP. III. _Of Animal Excrements._ 1. PROCESS. Dung analyzed: instanced in Human Excrement. Mr. Homberg's Phosphorus 588 2. Human Urine analyzed 596 CHAP. IV. _Of Volatile Alkalis._ 1. PROCESS. Volatile Alkalis rectified and depurated 599 2. Volatile Alkalis combined with Acids. Sundry Ammoniacal Salts. Sal Ammoniac 602 3. Sal Ammoniac decompounded by Acids 607 4. Sal Ammoniac decompounded by Fixed Alkalis. Volatile Salt. The Febrifuge of Sylvius 608 5. Sal Ammoniac decompounded by Absorbent Earths and Lime. Volatile Spirit of Sal Ammoniac. Fixed Sal Ammoniac. Oil of Lime 611 6. Volatile Alkalis combined with oily matters. A Volatile Oily Aromatic Salt 616 [Illustration: Decorative Scroll] ELEMENTS OF THE THEORY OF CHYMISTRY. CHAP. I. _Of the_ PRINCIPLES _of_ BODIES. The object and principal end of Chymistry, is to separate the different substances that enter into the composition of bodies; to examine each of them apart; to discover their properties and relations; to decompose, if possible, those very substances; to compare them together, and combine them with others; to re-unite them again into one body, so as to reproduce the original compound with all its properties; or even to produce new compounds that never existed among the works of nature, from mixtures of other matters differently combined. But this Analysis, or Decomposition, of bodies is finite; we being unable to carry it beyond a certain limit. In whatever way we attempt to go further, we are always stopped by substances in which we can produce no change, which will not admit of being resolved into others, and which stand as so many firm barriers obstructing our progress.