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Updated: May 15, 2025
This is what the Century says: "'It is a colorless, odorless syrup, with an intensely sour taste. It is tribasic, forming three distinct classes of metallic salts. The three atoms of hydrogen may in like manner be replaced by alcohol radicles, forming acid and neutral ethers. Phosphoric acid is used in medicine as a tonic.
Of the substances likely to occur in apatite, silicic acid alone interferes with the precipitation of the phosphoric acid in nitric acid solution. PROCEDURE. Grind the mineral in an agate mortar until no grit is perceptible. The filtrate and washings must be kept as small as possible and should not exceed 100 cc. in volume.
It is obvious that the larger the amount of substance taken for analysis the less will be the relative loss or gain due to unavoidable experimental errors; but, in this instance, a check is placed upon the amount of material which may be taken both by the bulk of the resulting precipitate of ammonium phosphomolybdate and by the excessive amount of ammonium molybdate required to effect complete separation of the phosphoric acid, since a liberal excess above the theoretical quantity is demanded.
So still and motionless did we seem without any distant point to fix our eyes on that but for the phosphoric light at the wake of the raft I should have fancied that we were still and motionless. But I knew that we were advancing at a very rapid rate. About twelve o'clock in the day, vast collections of seaweed were discovered surrounding us on all sides.
The tiny wavelets, as they rippled upon the beach in rapid succession, sparkled with phosphoric fire, and out in the lagoon, wherever a coral patch rose to the surface, or the water was disturbed by any floating object, it gave forth a clear and brilliant light, and was studded by myriads of fiery dots and spangles.
"Now," said Peterkin, gravely, "that brute is a heartless monster; I'll have nothing more to do with it." "I'm pretty sure now," said Jack, "that it is merely a phosphoric light; but I must say I'm puzzled at its staying always in that exact spot."
And plunging into the darkness with the assurance of a person who is well acquainted with his apartments, he took a plank and stopped up the aperture. Again Gavroche plunged into the obscurity. The children heard the crackling of the match thrust into the phosphoric bottle. The chemical match was not yet in existence; at that epoch the Fumade steel represented progress.
How the lit lake shines, a phosphoric sea, And the big rain comes dancing to the earth! And now again 'tis black, and now, the glee of the loud hills shakes with its mountain-mirth As if they did rejoice o'er a young earthquake's birth" When George III. died, Southey wrote a poem filled with absurd flattery of that monarch.
Other things were found in this hiding-place: the box of poisons, and Athalie's diary, with the frightful confessions which threw light on her soul's dark abysses, as the phosphoric mollusks do in the coral forests of the sea. What monsters dwell there!
Cagliostro marvelled, as he scanned the scene before him, whether it were all a reality or a delusion of his fancy; but the lapping of the surge upon the adjacent beach, and the perfume of Oriental spices which impregnated the breezes from the Levant, and even the motes that swarmed about him like phosphoric atoms, proved that it was no juggle of a distempered imagination.
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