contains air. Milk and blood, too, are made up of both water and earth, though earth generally predominates in them. So, too, are the liquids out Ryan McLaughlin Jersey of which natron and salt are formed; and stones are also formed from some mixtures of this kind. Hence, if the whey has not been separated, it burns away if you boil it over a fire. But the earthy element in milk can also be coagulated by the help of fig-juice, if you boil it in a certain way as doctors do when they treat it with fig-juice, and this is how the whey and the cheese are Juan Carlos Valenzuela Jersey commonly separated. Whey, once separated, does not thicken, as the Athletic Bilbao Børn Fodboldtrøjer milk did, but boils away like water. Sometimes, however, there is little or no cheese in milk, and such milk is not nutritive and is AS Roma Jersey more like water. The case of blood is similar: cold dries and so solidifies it. Corinthians Fodboldtrøjer Those kinds of blood that do not solidify, like that of the stag, belong rather to water and are very cold. Hence they contain no fibres: for the fibres AC Milan Barn are of earth and Adidas Stan Smith solid, and blood from which they have been removed does not solidify. This is because it cannot dry; for what remains Parajumpers Miehet Perfect is water, just as what remains of milk when cheese has been removed is water. The fact that diseased blood will not solidify is evidence of the same thing, for such blood is of the nature of serum and that is phlegm and water, the nature of the animal having failed to get the better of it and digest it.
Some of these bodies are soluble, e.g. natron, some insoluble, e.g. pottery: of the latter, some, like horn, can be softened by heat, others, like pottery and stone, cannot. The reason is that opposite causes have opposite effects: consequently, if solidification is due to two causes, the cold and the dry, solution must be due to the hot and the moist, that is, to fire and to water (these being opposites): water dissolving what was solidified by fire Eden Hazard Pelipaidat alone, fire what was solidified by cold alone. Consequently, if any things Obafemi Martins Jersey happen to be solidified by the action of both, these are least apt to be soluble. Such a case we find where things have been heated and are then solidified by cold. When the heat in leaving them has caused most of the Blank Jersey moisture to evaporate, the cold so compacts these bodies together again as Marco Delgado Jersey to leave no entrance even for moisture. Therefore heat does not dissolve them (for it only dissolves those bodies that are solidified by cold alone), nor does water (for it does not dissolve what cold solidifies, but only what is solidified by dry heat). But iron is melted by heat and solidified by cold. Wood consists of earth and air and is therefore combustible but cannot be melted or softened by heat. (For the same reason it floats in water-all except ebony. This does not, for other kinds of wood contain a preponderance of air, but in black ebony the air has escaped and so earth preponderates in it.) Pottery consists of earth alone because it solidified gradually in the process of drying. Water cannot get into it, for the pores were only large enough to admit of vapour escaping: and seeing that fire solidified it, that cannot links:
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