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Updated: May 9, 2025
The sensitizing effect of one silver compound upon another was then gone into, and experiments and photographs showed where two salts of silver were in contact with one another, and without an energetic sensitizer being at hand, that the one when acted upon by light absorbed the halogen liberated from the other through the same cause and that a new molecule was formed.
The sensitizing solution which serves to produce the verifiable image is prepared as follows: Bichromate of ammonia is dissolved in water till the latter is saturated; five grammes of powdered dextrin or glucose are then dissolved in 100 grammes of water; to either of these solutions is added 10 per cent. of the solution of bichromate, and the mixture filtered.
This operation also serves to fix the outlines of the drawing more distinctly, and to give more vigor to the dark tone of the paper. When the paper is thus prepared, and the sheets of glass each in its place, they are coated by means of a brush with a sensitizing solution on the side which comes into contact with the paper.
I heard the voices below me; one, that musical tone, that made the color come and go upon my cheeks, and as I turned hastily to descend to them while the breathing earth seemed to send upward its powerful sensitizing odors that turn energy into languorous desire, and touch the senses with indolence; at that moment the Morse register spoke! Could my ears have deceived me? No!
Two-thirds of the huge cluster were in the air about me, before the super was lifted. Yet there was not a sting from the tens of thousands. We had the true thirst that year. Little things were enough; we were innocent, even of possession, and brought back to the good land all the sensitizing that the City had given.
In like manner, the brain may be sensitized by the administration of large doses of thyroid extract prior to operation, the threshold to injury in such a case continuing to be low to traumatic stimuli even under anesthesia. Under the sensitizing influences of thyroid extract or of Graves' disease the effect of an injury, of an operation, or of emotional excitation is heightened.
And now Bedient knelt upon the stones, uplifted his hands to the starlight, and cried in a low voice: "God bless Beth Truba, and help me to bless her at every turning of her life! God bless Beth Truba for the sensitizing sorrow she gave me, without which this hour could not have been revealed to me!"
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