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Updated: June 18, 2025
Iron floats in our blood, sulphur lies hidden in the hair and nails, phosphorus scintillates unseen in the brain, lime compacts our bones, and fluorine sets the enamelled edges of our teeth. At least one-third of all the known chemical elements exist in some part of the human economy, and are taken into the stomach hidden in our various articles of food.
Joe's heart began to feel fatigue, and a man's heart normally simply doesn't ever feel tired. It became more and more difficult to see clearly. But he had work to do. Important work. The take-off rockets were solid-fuel jobs, like those which launched the Platform. They were wire-wound steel tubes lined with a very special refractory, with unstable beryllium and fluorine compounds in them.
But again, how chances it that different atoms attract one another in such varying degrees, so that, for example, fluorine unites with everything it touches, argon with nothing? And how is it that different kinds of atoms can hold to themselves such varying numbers of fellow-atoms oxygen one, hydrogen two, and so on? These are questions for the future.
G. F. Becker, of the United States Geological Survey, writing of the geology of the Comstock lode, says: "Baron Von Richthofen was of opinion that fluorine and chlorine had played a large part of the ore deposition in the Comstock, and this the writer is not disposed to deny; but, on the other hand, it is plain that most of the phenomena are sufficiently accounted for on the supposition that the agents have been merely solutions of carbonic and hydro-sulphuric acids.
Thus, in a man weighing 154 lbs. are found, 111 lbs. oxygen gas, and 14 lbs. hydrogen gas, which, united, form water; 21 lbs. carbon; 3 lbs. 8 oz. nitrogen gas; 1 lb. 12 oz. 190 grs. phosphorus; 2 lbs. calcium, the chief ingredient of bones; 2 oz. fluorine; 2 oz. 219 grs. sulphur; 2 oz 47 grs. chlorine; 2 oz. 116 grs. sodium; 100 grs. iron; 290 grs. potassium; 12 grs. magnesium; and 2 grs. silicon.
But if truth, pure, abstract and free from all mythical alloy, is always to remain unattainable, even by philosophers, it might be compared to fluorine, which cannot even be isolated, but must always appear in combination with other elements.
For instance, hydrogen, when it combines with gaseous elements other than oxygen, does not form a compound which is liquid at the temperature and pressure of the earth's surface. Its combinations with nitrogen, with chlorine, with fluorine, and even some with the solid element carbon, are under those conditions gaseous. What a special character, therefore, has water!
In its elementary form it is an irritating gas, used for bleaching purposes. Fluorine is present in small quantities in the body, appearing as fluorides in the bones and teeth. It is supplied by the various foods. In its elementary form it is a poisonous gas. Potassium is found in the body in very small quantities, but it is very important.
This place was famous for its herds of white cattle, brought up there for sacrifice, and supposed to be impregnated with that colour by the waters of the river last mentioned. Hinc albi, Clitumne, greges, et maxima taurus Victima, saepe tuo perfusi fluorine sacro, Romanos ad templa Deum duxere triumphos. Georg. ii.
The volcanoes we shot three months ago yielded a fine flow of lava with all sorts of metals nickel, beryllium, vanadium, chromium, iridium, as well as copper and iron." "What sort of gas were you speaking about?" she asked. "Hydrogen. That's what's going to make the fireworks; it combines explosively with fluorine.
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