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Updated: June 13, 2025
Indeed, we believe that, with the emulsion paper, it is possible to replace the whole of the silver of the image with gold, thereby producing a permanent print.
You must make a good barley-water, throwing away the three first waters as soon as they boil; which will take up about three quarters of an hour. When it is enough, let the broth run clear from the Barley and pullet, and beat the Almonds with the broth, and strain them from it. Then sweeten it with Sugar. This is to make at least two English quarts of Emulsion.
Then when, after being emptied by the siphon, the apparatus fills again, every particle of the emulsion which might have formerly been pressed down into the interstices of the sieve would now be driven up again by the upward pressure of the water entering from below, and thus the sieve would always be kept clear and open. The great advantages of this apparatus are as follows: 1.
Noguchi has made an emulsion of dead spirochætes which he calls luetin, and which gives a specific reaction resembling that of tuberculin in tuberculosis, a papule or a pustule forming at the site of the intra-dermal injection. It is said to be most efficacious in the tertiary and latent forms of syphilis, which are precisely those forms in which the diagnosis is surrounded with difficulties.
The stratum of ether decanted off is mixed in a test-tube with a drop of acetic acid. A red color appears if the slightest trace of magenta is present. The shaking must not be too violent, lest an emulsion should be formed. If the wine is colored with archil, on prolonged heating, after the addition of ammonia, it is decolorized. If it is then let cool and shaken a little, the red color returns.
Add twenty drops tabasco, twenty drops onion juice, the strained juice of half a lemon, and half a teaspoonful of brandy, rum or whiskey. Mix well, then add, tablespoonful at a time, a gill of salad oil, stirring hard between spoonfuls. Put in more vinegar, more oil the seasoning suffices for half a pint of dressing. Stir till it thickens it should be like an emulsion when poured upon the salad.
You may not know it, but vaseline is made from paraffin oil, and it's well known that vaseline is an extraordinarily wholesome sort of stuff, good for almost anything in the way of a cut or a burn. Then there's a kind of emulsion made from petroleum that's the same as paraffin which cures consumption.
Combined with the bile, this juice acts upon the large drops of fat which pass from the stomach into the duodenum and emulsifies them. This process consists partly in producing a fine subdivision of the particles of fat, called an emulsion, and partly in a chemical decomposition by which a kind of soap is formed.
Drum after drum is loaded in the same way, until the whole of the film is in position and the whirling continues until the negative is perfectly dry. Cleanliness in every possible respect is absolutely essential during the process of development, until the film is dry once more. The most minute speck of dust or foreign matter might adhere to the wet emulsion permanently disfiguring it.
The oil must be added drop by drop, but this does not mean a drop every two or three minutes; you may add a drop to every one or two circuits of the spoon. The reason for adding it slowly is that each drop may form an emulsion with the egg before more goes in.
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