The Hectoliter is the unit in measuring liquids, grain, fruit, and roots in large quantities.

951. EQUIVALENTS IN UNITED STATES MEASURES.

Metric Denominations. Cubic Measure.

1 Myrialiter 10 Cubic Meters 1 Kiloliter = 1 Cubic Meter 1 Hectoliter

1 Dekaliter

1 Liter

1 Deciliter 1 Centiliter

Cubic Meter

Dry Measure. = 283.72+ bu.

= 28.372+ bu.

= 2.8372+ bu.

= 9.08 quarts

= .908 quart

Cu. Decimeter = - 6.1022 cu. in.

10 Cu. Centimeters = .6102 cu. in.

Wine Measure. = 2641.4+ gal. = 264.17 gal.

26.417 gal.

952. The Gram is the unit of weight, and equal to the weight of a cube of distilled water, the edge of which is one hundredth of a meter, equal to 15.432 Troy grains.

The Kilogram, or Kilo, is the unit of common weight in trade and is a trifle less than 2 lb. Avoirdupois.

The Tonneau is used for weighing very heavy articles, and is about 204 lb. more than a common ton.

953. Units of the Common System may be readily changed to units of the Metric System by the aid of the following

2. LINES.

3. ANGLES.

4. PLANE
FIGURES.

MENSURATION.

1. Straight Line. 2. Curved Line. 3. Parallel Lines. 4. Horizontal Line. 5. Perpendicular Line.

(1. Angle. 2. Right Angle. 3. Obtuse Angle. 4. Acute Angle.

1. Plane Figure. 2. Polygon. 3. Perimeter. 4. Area. 5. Regular Polygon. 6. Altitude. 1. Triangle. 2. Right-angled Tri. 3. Hypothenuse. 4. Base. 5. Perpendicular. 6. Altitude. 7. Equilateral Triangle. 8. Isosceles Triangle. 9. Scalene Triangle. 10. Equiangular Triangle. 11. Acuteangled Triangle. 12. Obtuse-angled Triangle.

6. Q'DRIL'TERALS.

MENSURATION-CONTINUED.

1. Defs.

1. Quadrilateral. 2. Parallelogram. 3. Rectangle. 4. Square. 5. Rhomboid. 6. Rhombus. 7. Trapezoid. 8. Trapezium. 9. Altitude. 10. Diagonal.

2. Prob-
lems.

898.

899.

area of 900.

1. Defs. 1. Circle. 2. Diameter. 3. Radius.

Rule.

8. SIMILAR PLANE FIGURES.

9. SOLIDS.

2. Problems.

1. Defs.

Area of Circular Ring. Rule. Mean Proportional. Rule. (1. Definition.

(2. Principles, 1, 2, 3, 4, 5. 2. Prism. 3. Altitude. 4. Par5. Cube. 6. Cylinder. 7. Pyra9. Altitude of Pyramid or Cone. 11. Frustum. 12. Sphere. 14. Radius.

1. Solid or Body.
allelopipedon.
mid. 8. Cone.
10. Slant Height.
13. Diameter.

3. Similar Solids. Principles, 1, 2.

10. GAUGING. 1. Definitions. 2. Rules.

1. DEFINITIONS.

2. MEASURES OF
EXTENSION.

3. MEASURES OF

САРАСІТУ.

4. MEASURES OF

WEIGHT.

{

1. Metric System. 2. Meter. 3. Multiple Units. 4. Sub-Multiple Units.

1. Meter. 2. Kilometer. 3. Are. 4. Square Meter. 5. Stere. 6. Cubic Meter. 1. Liter. 12. Hectoliter.

1. A Measure is a standard unit, established by law or custom, by which quantity, as extent, dimension, capacity, amount, or value is measured or estimated.

Thus, the standard unit of Measures of Extension is the yard; of Liquid Measure, the wine gallon; of Dry Measure, the Winchester bushel; of Weight, the Troy pound, etc. Hence the length of a piece of cloth is ascertained by applying the yard measure; the capacity of a cask, by the use of the gallon measure; of a bin, by the use of the bushel measure; the weight of a body, by the pound weight, etc.

2. Measures may be classified into six kinds :

1. Extension.

2. Capacity.

3. Weight.

4. Time.

5. Angles or Arcs.
6. Money or Value.

MEASURES OF EXTENSION.

3. Extension has length, breadth, and thickness. 4. A Line has length only.

5. A Surface or Area has length and breadth. 6. A Solid has length, breadth, and thickness.

7. Linear Measure, also called Long Measure is used in measuring lines and distances.

8. Cloth Measure is practically out of use. In measuring goods sold by the yard, the yard is divided into halves, fourths, eighths, and sixteenths.

At U. S. Custom-Houses, in estimating duties, the yard is divided