APPENDIX. 



Weights and measures of England, France, &c. Weight of various 

 rocks and metallic ores. Specific gravity of metals, metallic ores 

 and rocks. Table of natural sines. Melting point of various 

 me tals. Table to find the number of ounces of metal to the ton 

 of ore. Glossary of terms used in connection with prospecting, 

 mining, mineralogy, assaying, &c. To find weight of ore in a 

 lode, and the value of a mine. 



WEIGHTS AND MEASURES. 



ENGLISH. 

 Measures of Length. 



3 barleycorns 



12 inches 



3 feet 

 5^ yards 



4 poles or 100 links 

 10 chains 



8 furlongs 



i inch. 



i foot. 



i yard (36 inches). 



i rod, pole, or perch (i6 feet), 



i chain (22 yards or 66 feet.) 



i furlong (220 yards). 



i mile (1760 yards). 



lurlongs = i mile (1700 yards;. 



span = 9 inches ; a fathom = 6 feet ; a league = 3 miles. 



r* / it JT 



Surface Measure. 



144 square inches 



9 square feet 

 30^ square yards 



16 poles (square) 



40 poles 



10 chains 



640 acres 



square foot. 



square yard. 



pole, rod, or perch (square). 



chain (sq.) or 484 square yards. 



rood (sq.) or 1210 square yards. 



acre (4840 square yards). 



square mile. 



Solid Measure. 



1728 cubic inches = i cubic foot. 

 2 7 cubic feet = i cubic yard. 



