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OFFICE OF STANDARD WEIGHTS AND MEASURES.
DENHALL, Superintendent.
AND MEASURES-CUSTOMARY TO METRIC.

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scale belonging to this office, whose length at 59.62° Fahr. conforms to the British yard. of the Mint. It is of brass of unknown density, and therefore not suitable for a by direct comparison. The British Avoirdupois pound was also derived from the Avoirdupois in use in the United States is equal to the British pound Avoirdupois.

WASHINGTON, D. C., January, 1890.

By Permission of T. C. MEN TABLE FOR CONVERTING U. S. WEIGHTS

[blocks in formation]

I

[blocks in formation]

2

3

9.884

5

12.355

14.826

8.372

7 8 9

9.568

17.297 19.768 22,239

10.764

Square centimetres Square metres
to square inches. to square feet.
0.1550

10.764
0.3100

21.528 0.4650

32.292 0.6200

43.055 0.7750

53.819 0.9300

64.583 1.0850

75.347 I. 2400

86.111 1.3950

96.874

CUBIC. Cubic centimetres Cubic decimetres to cubic inches. to cubic inches. 0.0610

61.023 0.I 220

I 22.047 0.1831 183.070 0.2441

244.093 0.3051

305.117 0.3661

366.140 0.4272

427.163 0.4882 488.187 0.5492

549.210

I =

2

3 4 5

[blocks in formation]

7 8

9

By the concurrent action of the principal governments of the world an Inter the direction of the International Commitiee, two ingots were cast of pure plati From one of these a certain number of kilogrammes were prepared, from the other tercompared, without preference, and certain ones were selected as International ments, and are called National prototype standards. Those apportioned to the

The metric system was legalized in the United States in 1866.

The International Standard Metre is derived from the Metre des Archives, platinum-iridium bar deposited at the International Bureau of Weights and Meas

The International Standard Kilogramme is a mass of platinum-iridium de gramme des Archives.

The liter is equal to a cubic decimetre of water, and it is measured by the quan ard kilogramme in a vacuum, the volume of such a quantity of water being, as

OFFICE OF STANDARD WEIGHTS AND MEASURES.
DENHALL, Superintendent.
AND MEASURES-METRIC TO CUSTOMARY.

I

2

1.35

6.3401

18.4919

I

2

3

CAPACITY.
Millimetres or Centilitres Litres

Decalitres Hectolitres cubic centimetres to

to

to

to to fluidrachms. fluidounces. quarts. gallons. bushels.

0.27 0.338 1.0567 2.6417 2.8375 0.54 0.676 2.1134 5.2834 5.6750 0.81

1.014 3. 1700 7.9251 8.5125 1.08 1.352 4.2267 10.5668

11.3500 1.691 5.2834 13.2085 14.1875 1.62 2.029

15.8502 17.0250 1.89 2.368 7.3968

19.8625 2.16 2.706

8.4534

21.1336 22.7000 2.43

3.043 9.5101 23.7753 25.5375

WEIGHT. Milligrammes Kilogrammes Hectogrammes Kilogrammes to

to

(100 grammes) to pounds grains.

grains.

to ounces Av. Avoirdupois. 0.01543 15432.36

3.5274

2. 20462 0.03086 30864.71

7.0548

4.40924 0.04630 46297.07 10.5822

6.61386 0.06173 61729.43 14.1096

8.81849 0.07716 77161.78 17.6370

11.02311 0.09259 92594.14 21.1644

13.22773 0.10803 108026.49

24.6918

15.43235 0.12346 123458.85 28.2192 17.63697 0.13889 138891.21

31.7466

19.84159
WEIGHT-(CONTINUED).
Quintals to
Milliers or tonnes

Grammes to
pounds Av.
to pounds Av.

ounces, Troy. 220.46 2204.6

0,03215 440.92 4409.2

0.06430 661.38 6613.8

0.09645 8818.4

0.12860 1102.30 11023.0

0.16075 1322.76 13227.6

0.19290 1543.22 15432.2

0.22505 1763.68 17636.8

0.25721 1984.14 19841.4

0.28936

9

I

2

3

881.84

7 8

9

national Bureau of Weights and Measures has been established near Paris. Under num-iridium in the proportion of nine parts of the former to one of the latter metal. a definite number of metre bars. These standards of weight and length were inprototype standards. The others were distributed by lot to the different governUnited States are in the keeping of this office. and its length is defined by the distance between two lines at oo Centigrade, on a posited at the same place, and its weight in vacuo is the same as that of the Kilotity of distilled water which, at its maximum density, will counterpoise the standnearly as has been ascertained, equal to a cubic decimetre.

ures.

INDEX.

boric, 73

ras, 162

ate, 162

Absinthium, 138
Acacia, 117
Aceta, 52
Acetanilid, 114
Acetanilidum, 114
Acetone, 112
Acid, arabic, 117

boracic, 73
chromic, 100
gallic, 158
hydriodic, 70
hydrosulphuric, 70
lactic, 161, 172
meconic, 161
nitromuriatic, 66
oleic, 144, 145
oxalic, 111
palmitic, 144
prussic, 135
pyrogallic, 159
salicylic, 115
stearic, 144, 145

sulphuric, 67
Acids, 64

inorganic, 64
Acidum aceticum, 112

glaciale, 112

dilutum, 112
benzoicum, 142
boricum, 73
carbolicum, 114

crudum, 114
citricum, 127
gallicum, 158
hydrobromicum dilu-

tum, 65
hydrochloricum, 65

dilutum, 65
hydrocyanicum dilu-

tum, 135
hypophosphorosum di-

lutum, 66
lacticum, 172
nitricum, 66

dilutum, 66
nitrohydrochloricum
66

dilutum, 67
oleicum, 145
oxalicum, 111
phosphoricum, 68

dilutum, 68

Acidum stearicum, 145

sulphuricum aromati-
cum, 68

dilutum, 68
sulphurosum, 68
tannicum, 158

tartaricum, 127
Aconite, 168
Aconitum, 168
Adapters, 17
Adeps, 170

benzoinatus, 170

lanæ hydrosus, 170
Æther, 122

aceticus, 124
Alcohol, 120, 121

absolutum, 121
deodoratum, 122
dilutum, 121

methylic, 112
Alcoholic solution, 39
Aldehyd, 124
Alkaloids, 160
Allspice, 132
Allyi iso-thiocyanate, 135

sulpho-cyanide, 135
Aloin, 157
Aloinum, 157
Almond, bitter, 134

sweet, 134
oil, 144

sweet, 144
Aloe barbadensis, 157

purificata, 157
Aloes, Barbadoes, 157

socotrine, 157
Allium, 135
Althæa, 118
Alum, 93, 96
Aluminum, 91

salts, 93
American Hellebore, 167

wormseed, 137
Amides, 160
Amines, 160
Ammoniac, 141
Ammoniacum, 141
Ammonium, 74

salts, 86
Amygdala amara, 134
Amygdala dulcis, 144
Amyl, 123
nitris, 124

Amylum, 116
Anethol, 131
Animal substances, 190
Anise, 131

star, 131
Anisum, 131
Anthemis, 138
Antidote, Bibron's, for
Rattlesnake poison, 70

for arsenic, 97
Antimony, 106

tartrated, 106
trioxide, 106
trisulphide, 106

wine, 107
Apocynum, 140
Apomorphinæ hydrochlo-
Apomorphine hydrochlor-
Aqua, 64

acidi carbonici, 73
chlori, 69
destillata, 64
hydrogenii dioxidi, 64

regia, 66
Aquæ, 32
Arabin, 117
Argols, 76, 126
Arnica flowers, 138

root, 138
Arnicæ fiores, 138

radix, 138
Arsenic, 106, 107

antidote, 97
trioxide, 107

white, 107
Asafetida, 141
Asafoetida, 141
Asclepias, 140
Aspidium, 139
Aspidosperma, 168
Atropine, 165

sulphate, 165
Atropina, 165
Atropinæ sulphas, 165
Aurantii dulcis cortex, 129

Balance. See Metrology.
Balm, 130
Balsa in copaiba, 135

Peru, 142

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