OF WEIGHTS AND MEASURES.

Avoirdupois Weight is the only weight made use of in mechanical calculations; and all metals, save gold and silver, are weighed by it: hence, it is not requisite here to take any other into consideration.

Fr. Grammes. 1 Dram

1.771 16 Drams =1 Ounce

28.346 16 Ounces = 1 Pound

453.544 28 Pounds = 1 Quarter

12.699 kilog. 4 Quarters 1 Hundred wt. 50.796 20 Hundred wt. 1 Ton

1015.920

Note-5760 Troy grains -1 pound Troy; and 7000 Troy grains - 1 pound Avoirdupois; hence, 175 pounds Troy - 144 pounds Avoirdupois.

Or, Avoirdupois.... libs. X 1.21527 Troy libs.
Do........ ounces X .9115

Do. ounces.
Troy

libs. x

.823 Avoir. libs.
Do....... ounces X 1.1

Do. ounces.
Do...... grains X:.03657 - Do. drams.
Also. Avoirdupois ... lib. x .00893 - Cwts.
And, Do.... - • libs. x .000447 Tons nearly.

Tables showing the relative proportion between Foreign Weights

and the Avoirdupois Pound.

1. FRENCH WEIGHTS,-DECIMAL SYSTEM,

1 Milligramme
1 Centigramme
1 Decigramme ; .
1 Gramme
1 Decágramme
1 Hectogramme..
1 Kilogramme
1 Myriagramme....
1 Quintal
1 Millier or Bar...

.0154 Troy grains.
.1543
1.5434
15.4340
154.3402
1543.4023
2.20486 libs. Avoirdupois.
22.0486
1 cwt. 3 qrs. 25 libs. nearly.
9 tons. 16 cwt. 3 qrs. 12 lbs.

Alexandria rotola for

.

Places and names of

Places and names of
weights.

libs.
weights.

libs.
Genoa peso sottile .6988
fora
.9347

peso grosso .7687 rotola zaidino 1.335 Hamburgh ..pound 1.068 rotola zauro 2.07 Havannah pound 1.075

rotola mina 1.67 Leghorn . pound .764 Amsterdam . old pound 1.09 Madras

... vis 3.125 new ditto 2.206 Malabar.

visay 3.001 Antwerp old pound 1.033 Malta ..... rottolo 1.745

....new ditto 2.206 Mocha .. rottolo 1.125 Bahia, Lisbon,

commercial and Oporto arragal 1.012 Mogadore

pound

1.19 Barcelona. pound .882

market pound 1.781 Batavia

cattie 1.36 Naples.. rottolo 1.965 Bergen,

Odessa and
Christina, &pound 1.1025
Copenhagen

Pt-au-Prince) livre
Bombay

... seer
.7.
and

poids de 1.08 Bremen ..pound 1.098 Port Louis.. mare Buenos Ayres,

Riga

pound .9217 Cadiz, Lima,

Rio de Janeiro arragal 1.01 Malaga, Val-> pound 1.015 Rotterdam pound 2.204 paraiso, and

Smyrna

oke 2.82 Vera Cruz..

? commer

.9375 Calcutta.

....... seer 2.053 Canton & Manilla catty) 1.333

iron weight 75 Cape Town .... pound 1.09 Trieste

pound 1.236 Constantinople. .oke 2.823 Venice

peso grosso 1.0518) Dantzic & Memel pound 1.033

• peso sottilel .6643 Note.-- America, the British West Indies, Gibraltar, and Van Dieman's Land use the pound Avoirdupois as in England.

Ex. 1. Suppose I purchase an article in London which weighs 50 libs. Avoirdupois, what will it weigh in Amsterdam according to their new weight? 50 — 2.206 = 22.606 or 22 libs. 9 oz. 11.137 dr. Avoirdupois.

Petersburgh} pound 9019

Ex. 2 An article that weighs 60 libs in Leghorn, according to their weight, what will it weigh in libs. Avoirdupois?

.764 x 60 - 45.84 libs. Avoirdupois nearly.

LONG MEASURE.

Pr. Metres. 12 Inches

1 Foot......

.3048 3 Feet

1 Yard

.9144 6 Feet ..=1 Fathom

1.8288 54 Yards

1 Pole or Rod 5.0291 40 Poles

1 Furlong

201.1632 8 Furlongs or 1760 yards 1 Mile.... 1609.3059 3 Miles

i League

....= 4827.9179

The Lineal Foot of various countries, given in English inches.

Inches.

Inches. Amsterdam and

Canton...

12.65 11.113 Antwerp

Dantzic and Babia, Lisbon, &

Memel

= 11.3 Rio de Janeiro

= 12.944

Port-au-Prince Bergen, Copen.

and

12.8 hagen, Cape

Port Louis
Town, Chris- 12.36 Riga.

10.79 tiana, & Ham

Stockholm

11.684 burgh

Length of a Mile in different countries given in English yards. Yards.

Yards. Dantzic... 8474 Poland..

8239 Denmark 8244 Portugal

6760 Flanders 6864 Prussia

8237 Germany 6859 Russia

1167 Hanover 1155 Scotland

1984 Holland. 8239 Spain..

4634 Hungary 9113 Sweden.

1170 Ireland ..

2240
Switzerland

9153 Netherlands. 1093 Tuscany

1808

SUPERFICIAL MEASURE.

Fr. Sq. Metres. 144 Square inches

1 Sq. foot

.0929 9 Square feet

I Sq. yard

.8361 304 Square yards

1 Sq. pole 25.2916 40 Square poles

1 Rood

1011.6662 4 Roods or 4840 Sq. yards 1 Acre...... 4046.6648

A Scotch Acre contains 6084 square yards.
And an Irish Acre contains 780 square yards.

FRENCH SUPERFICAL MEASURES.

1 Centiare

1.1960 Square yards. 1 Are (a square decametre) 119.6046 1 Decare

1196.0460 1 Hectare

11960.4604 or 2 acres, 1 rood, 35 perches.

SOLID MEASURE.

1728 Cubic inches

27 Cubic feet: : : 42 Cubic feet..

Fr. Cubic Metres. 1 Cubic foot

.0283 i Cubic yard

.7645 1 Ton of shipping

1.1892

A load of unbewn'timber

A Table shening the relative value between the British Imperial

Gallon and Foreign measures of capacity. Places and names of Imp. Places and names of Imp. measures.

Gals.
measures

Gais. Amsterdam....

mingle 266 Havannah...... arroba 3.415

kan .220 Leghorn wine fiasco .499 Antwerp .stoopen .608.

oil fiasco .443 litre .220 Lisbon.. .almude 3.641 Barcelona cortane 2.270 Malta... .caffisol 4.582 Bordeaux........velte 1.672 Mocba.

cuda 1.666 Cadiz

· great arroba 3.540 Naples ....wine barilli 9.164 small arroba 3.124

oil staja 2.226 Constantinople .. alma 1.146 Oporto... ..almude 5.311 Dantzic .... beer anker 12.925 Petersburgh wedro 2.707 wine anker 9.915 Rotterdam stoop

.564 Genoa ....wine barilla 16.349 Stockholm kanne .575

......oil barilla 14.162 Trieste .... .boccali .312 Gibraltar ......