WEIGHTS AND MEASURES.
| Troy Weight. | |
| 24 grains | 1 pennyweight. |
| 20 pwts. | 1 ounce. |
| 12 ounces | 1 pound. |
| Long Measure. | |
| 12 inches | 1 foot. |
| 3 feet | 1 yard. |
| 2 yards | 1 fathom. |
| 16½ feet | 1 rod. |
| 4 rods | 1 chain. |
| 10 chains | 1 furlong. |
| 8 furlongs | 1 mile. |
| Square Measure. | |
| 9 sq. feet | 1 sq. yard. |
| 30¼ sq. yds. | 1 sq. rod. |
| 40 sq. rods | 1 sq. rood. |
| 4 sq. roods | 1 sq. acre. |
| 640 sq. acres | 1 sq. mile. |
| An acre is 209 feet square. | |
| Land Measure. | |
| 7.92 inches | 1 link. |
| 25 links | 1 rod. |
| 4 rods | 1 chain. |
| 80 chains | 1 mile. |
| Avoirdupois Weight. | |
| 16 drams | 1 ounce. |
| 16 ounces | 1 pound. |
| 25 pounds | 1 quarter. |
| 4 quarters | 1 cwt. |
| 20 cwt. (2,000 pounds) | 1 ton. |
| Apothecary's Weight. | |
| 20 grains | 1 scruple. |
| 3 scruples | 1 dram. |
| 8 drams | 1 ounce. |
| 12 ounces | 1 pound. |
GLOSSARY.
Adamantine—Having diamond luster.
Adit—A horizontal tunnel from the surface draining a mine.
Alluvium—Deposit by streams.
Amalgamation—Combining mercury with another metal.
Analysis—A chemical search whereby the nature (qualitative) and amount (quantitative) of the components of a substance are found out.
Aqua regia—A mixture of 3 parts hydrochloric acid with 1 part strong nitric acid.
Arenaceous—Sandy.