Part 445

First clean the hole by means of a small squirt gun filled with kerosene. All broken pieces of the tap can be removed with a pair of tweezers, which should be as large as possible. Then insert the tweezers between the hole and flutes of the tap. By slowly working back and forth and occasionally blowing out with kerosene, the broken piece is easily released.

TAR PAINTS: See Wood.

TAR-SPOTS ON WOODWORK: See Paint.

TAR-SULPHUR SOAP: See Soap.

TAR SYRUP: See Essences and Extracts.

«TATTOO MARKS, REMOVAL OF.»

Apply a highly concentrated tannin solution on the tattooed places and treat them with the tattooing needle as the tattooer does. Next vigorously rub the places with a lunar caustic stick and allow the silver nitrate to act for some time, until the tattooed portions have turned entirely black. Then take off by dabbing. At first a silver tannate forms on the upper layers of the skin, which dyes the tattooing black; with slight symptoms of inflammation a scurf ensues which comes off after 14 to 16 days, leaving behind a reddish scar. The latter assumes the natural color of the skin after some time. The process is said to have given good results.

TAWING: See Leather.

TEA EXTRACT: See Essences and Extracts.

«TEETH, TO WHITEN DISCOLORED.»

Moisten the corner of a linen handkerchief with hydrogen peroxide, and with it rub the teeth, repeating the rubbing occasionally. Use some exceedingly finely pulverized infusorial earth, or pumice ground to an impalpable powder, in connection with the hydrogen peroxide, and the job will be quicker than with the peroxide alone.

TEMPERING OF STEEL: See Steel.

«TERRA COTTA SUBSTITUTE.»

A substance, under this name, designed to take the place of terra cotta and plaster of Paris in the manufacture of small ornamental objects, consists of {706}

Albumen 10 parts Magnesium sulphate 4 parts Alum 9 parts Calcium sulphate, calcined 45 parts Borax 2 parts Water 30 parts

The albumen and alum are dissolved in the water and with the solution so obtained the other ingredients are made into a paste. This paste is molded at once in the usual way and when set the articles are exposed in an oven to a heat of 140° F.

TERRA COTTA CLEANING: See Cleaning Preparations and Methods.

TEXTILE CLEANING: See Cleaning Preparations and Methods and Household Formulas.

«Thermometers»

Table Showing the Comparison of the Readings of Thermometers.

CELSIUS, OR CENTIGRADE (C). RÉAUMUR (R). FAHRENHEIT (F).

──────+─────────+──────── C. │ R. │ F. ──────+─────────+──────── −30 │ −24.0 │ −22.0 −25 │ −20.0 │ −13.0 −20 │ −16.0 │ − 4.0 −15 │ −12.0 │ + 5.0 −10 │ − 8.0 │ 14.0 − 5 │ − 4.0 │ 23.0 − 4 │ − 3.2 │ 24.8 − 3 │ − 2.4 │ 26.6 − 2 │ − 1.6 │ 28.4 − 1 │ − 0.8 │ 30.2 0 │ 0.0 │ 32.0 Freezing point of water. 1 │ 0.8 │ 33.8 2 │ 1.6 │ 35.6 3 │ 2.4 │ 37.4 4 │ 3.2 │ 39.2 5 │ 4.0 │ 41.0 6 │ 4.8 │ 42.8 7 │ 5.6 │ 44.6 8 │ 6.4 │ 46.4 9 │ 7.2 │ 48.2 10 │ 8.0 │ 50.0 11 │ 8.8 │ 51.8 12 │ 9.6 │ 53.6 13 │ 10.4 │ 55.4 14 │ 11.2 │ 57.2 15 │ 12.0 │ 59.0 16 │ 12.8 │ 60.8 17 │ 13.6 │ 62.6 18 │ 14.4 │ 64.4 19 │ 15.2 │ 66.2 20 │ 16.0 │ 68.0 21 │ 16.8 │ 69.8 22 │ 17.6 │ 71.6 23 │ 18.4 │ 73.4 24 │ 19.2 │ 75.2 25 │ 20.0 │ 77.0 26 │ 20.8 │ 78.8 27 │ 21.6 │ 80.6 28 │ 22.4 │ 82.4 29 │ 23.2 │ 84.2 30 │ 24.0 │ 86.0 31 │ 24.8 │ 87.8 32 │ 25.6 │ 89.6 33 │ 26.4 │ 91.4 34 │ 27.2 │ 93.2 35 │ 28.0 │ 95.0 36 │ 28.8 │ 96.8 37 │ 29.6 │ 98.6 38 │ 30.4 │ 100.4 39 │ 31.2 │ 102.2 40 │ 32.0 │ 104.0 41 │ 32.8 │ 105.8 42 │ 33.6 │ 107.6 43 │ 34.4 │ 109.4 44 │ 35.2 │ 111.2 45 │ 36.0 │ 113.0 50 │ 40.0 │ 122.0 55 │ 44.0 │ 131.0 60 │ 48.0 │ 140.0 65 │ 52.0 │ 149.0 70 │ 56.0 │ 158.0 75 │ 60.0 │ 167.0 80 │ 64.0 │ 176.0 85 │ 68.0 │ 185.0 90 │ 72.0 │ 194.0 95 │ 76.0 │ 203.0 100 │ 80.0 │ 212.0 Boiling point of water. ──────+─────────+────────

Readings on one scale can be changed into another by the following formulas, in which t° indicates degrees of temperature:

Réau. to Fahr. 9⁠/⁠4t° R + 32° = t° F

Réau. to Cent. 5⁠/⁠4t° R = t° C

Cent. to Fahr. 9⁠/⁠5t° C + 32° = t° F

Cent. to Réau. 4⁠/⁠5t° C = t° R

Fahr. to Cent. 5⁠/⁠9(t° F − 32°) = t° C