Näytetään tekstit, joissa on tunniste 1873. Näytä kaikki tekstit
Näytetään tekstit, joissa on tunniste 1873. Näytä kaikki tekstit

16.8.25

[765] Colored Candies.

Manufacturer and builder 9, 1873 Litmus, indigo and anilin blue are harmless blue colors, while the chlorophilin or the green coloring mat...

[748] Coloring Gun-Barrels.

Manufacturer and builder 9, 1873 The first question has been answered in our August number for 1871, Query 150, page 191. The answer to th...

23.6.25

Vegetable coloring matters.

The Galaxy 4, 1871 DR. H. C. Sorby has lately been studying the vegetable coloring matters by means of spectrum analysis, directing attent...

5.2.23

[819] Laquer for Brass.

Manufacturer and builder 11, 1873 This question has been answered in our September number for 1872, query 456. The proportions do not make...

[812] Making India Ink.

Manufacturer and builder 11, 1873 If you follow the hints given to question 809, under the bend of "Mixing Lampblack," you will ...

[809] Mixing Lampblack with Water.

Manufacturer and builder 11, 1873 We found that the use of alcohol always helped us out of this trouble. When once mixed with strong or d...

6.4.22

Metallic Poisoning.

Manufacturer and builder 11, 1873 A recent report of the New York Board of Health states that the cases of lead poiaoning in the trades ar...

9.1.22

(531) Painting Church Organs.

Manufacturer and builder 1, 1873 The organ in question is not painted at all, the carvings are all dark oak, and the pipes polished block-...

[527] To Make the Face Pale.

Manufacturer and builder 1, 1873 It would be easy enough for us to give a prescription for internal use, to make you look pale, but as we ...

13.1.20

[782] Cheap Inks.

Manufacturer and builder 8, 1873 It is, of course, impossible to say with certainty if a thing is good without inspecting it; but the doub...

[722] Slate Pencils and School Crayons.

Manufacturer and builder 8, 1873 Mix a small but sufficient quantity of pipe-clay and gine-water with the slate-dust so as to make a thick...

[718] Preventing Mold in Ink.

Manufacturer and builder 8, 1873 Add some acetic acid or strong vinegar; but merculiar sublimate is the best. A few grains in a quart is s...

[717] Analyzing Ink.

Manufacturer and builder 8, 1873 Boil down a given quantity of the ink, say 100 grammes, until dry; the residue is tannate of iron, which ...

3.11.18

Notes & Queries. 615. Adulterated Ultramarine. 616. Making blue ultramarine.

The Manufacturer and Builder 5, 1873 615. Adulterated Ultramarine. - How can I detect adulteration in ultramarine? I hear it is done ofte...

9.10.18

Scientific Miscellany. Uncrystallized or amorphous silica...

The Galaxy 4, 1873 Uncrystallized or amorphous silica has been found by M. Kerinam to possess important properties as a mordant, especiall...

6.10.18

Nature and Science. The Chemical Rays of the Spectrum.

Scribners monthly 5, 1873 The second memoir of Dr. John W. Draper's researches in Actino-chemistry is published simultaneously in the ...

4.5.18

Dyeing with indigo.

The Galaxy 3, 1873 A discovery of a considerable interest for the art of dyeing has recently been made by M. Schützenberger, of the Paris ...

3.4.18

Yellow color on silk.

Harper's new monthly magazine, 1873 Pfeiffer informs us that the yellow color of silk is a more or less altered chlorophyl, which has ...

2.4.18

The nature of sunlight.

Harper's new monthly magazine 1873 Dr. Draper, of New York, has lately published a summary of the views respecting the activity of the...

1.4.18

Poisoning of the Atmosphere by Arsenic in Wall-Papers

Harper's new monthly magazine 1873 The poisonous effects upon the air of rooms of arsenical pigments on wall-paper have been generally...

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