The following oroid or imitation gold is sometimes sold for the genuine article which it closely resembles. Pure copper, 100 parts by weight, is melted in a crucible, and then 6 parts of magnesia, 3.6 of sal-ammoniac, 1.8 of quicklime and 9. of tartar are added separately and gradually in the form of powder. The whole is then stirred for about half an hour, and 17 parts of zinc or tin in small grains are thrown in and thoroughly mixed. The crucible is now covered and the mixture kept melted for half an hour longer, when it is skimmed and poured out.
Any imitation of gold may be detected by its weight, which is not one-half of what it should be, and by its dissolving in nitric acid while pure gold is untouched.
HOW TO TELL ANY PERSON'S AGE.
There is a good deal of amusement in the following magical table of figures. It will enable you to tell how old the young ladies are. Just hand this table to a young lady, and request her to tell you in which column or columns her age is contained, and add together the figures at the top of the columns in which her age is found, and you have the great secret. Thus, suppose her age to be 17, you will find that number in the first and fifth columns; add the first figures of these two columns.
Here is the magic table:
1 2 4 8 16 32
3 3 5 9 17 33
5 6 6 10 18 34
7 7 7 11 19 35
9 10 12 12 20 36
11 11 13 13 21 37
13 14 14 14 22 38
15 15 15 15 23 39
17 18 20 24 24 40
19 19 21 25 25 41
21 22 22 26 26 42
23 23 23 27 27 43
25 26 28 28 28 44
27 27 29 29 29 45
29 30 30 30 30 46
31 31 31 31 31 47
33 34 36 40 48 48
35 35 37 41 49 49
37 38 38 42 50 50
39 39 39 43 51 51
41 42 44 44 52 52
43 43 45 45 53 53
45 46 46 46 54 54
47 47 47 47 55 55
49 50 52 56 56 56
51 51 53 57 57 57
53 54 54 58 58 58
55 55 55 59 59 59
57 58 60 60 60 60
59 59 61 61 61 61
61 62 62 62 62 62
63 63 63 63 63 63
WHAT THE WHITE HOUSE COSTS.
Salary of President, $50,000; additional appropriations are about $75,000. A total of $125,000. The President has the following corps of assistants: Private Secretary, $3,250; Assistant Private Secretary, $2,250; Stenographer, $1,800; five Messengers, $1,200 each, $6,000; Steward—; two Doorkeepers, $1,200 each, $2,400; two Ushers, $1,200, $1,400, $2,600; Night Usher, $1,200; Watchman, $900, and a few other minor clerks and telegraph operators.
SUNDRIES.—Incidental expenses, $8,000; White House repairs—carpets and refurnishing, $12,500; fuel, $2,500; green-house, $4,000; gas, matches and stable, $15,000.
These amounts, with others of minor importance, consume the entire appropriations.