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Updated: May 21, 2025
When a tingeing decoction is precipitated by an alkaline lixivium, and the precipitate is not redissolved by any acid, for the most part neither one nor the other of these saline substances ought to be used, but the neutral salts will be greatly preferable.
George had marked some of the crowd at the meetings Noonan had arranged for him, and the last touch to the perfunctory character of the disturbance was added by the leisurely stroll of the policeman turning in at the head of the street. Before he reached the crowd it had redissolved into the rapidly filling thoroughfare. "It's no use, Penny.
This is possible even under the most favorable conditions, and for this reason the iron precipitate is redissolved and again precipitated to free it from calcium. The aluminium is then determined by difference, after subtracting the weight of ferric oxide corresponding to the amount of iron found.
Then add sodium hydroxide solution until the precipitate which first forms is redissolved and a clear blue liquid obtained. Heat the upper portion of the liquid slowly to near the boiling point. A little below the boiling point the blue color disappears and a yellow-red precipitate is formed.
It is, therefore, redissolved and again thrown down by ammonia. The organic matter of the filter paper may occasion a partial reduction of the iron during solution, with consequent possibility of incomplete subsequent precipitation with ammonia. The nitric acid is added to reoxidize this iron. The use of suction to promote filtration and washing is permissible, though not prescribed.
When the action is slight, this appearance does not last long; the particles of "aggregated protoplasm redissolved, the process of redissolution traveling upward from the base of the tentacle to the gland in a reverse direction to that of the aggregation.
After a short time it gradually disappears, being either redissolved, when the water is less charged with lime, or more probably is mechanically abraded. Lieutenant Evans has observed these facts, during the six years he has resided at Ascension. The incrustation varies in thickness in different years: in 1831 it was unusually thick.
The sun was setting, and a gentle southerly breeze, striking against the southern side of the rock, mingled its current with the colder air above; and the vapour was thus condensed: but as the light wreaths of cloud passed over the ridge, and came within the influence of the warmer atmosphere of the northern sloping bank, they were immediately redissolved.
Presently the whole becomes redissolved: these stages of the growth being completed, this little system of worlds is melted, as it were: but while it undergoes this process, the albuminous spheres, after being dissolved, arrange themselves in concentric rings, alternating with rings of granules, around the Purkinjean vesicle.
All the endowment of animality is, so to speak, repudiated; all the produce of study and of cultivation is in the same way annulled; the whole crystallization is redissolved into fluid; the whole rainbow is withdrawn within the dewdrop; consequences return to the principle, effects to the cause, the bird to the egg, the organism to its germ.
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