It appears from this record that the industry of mining phosphate rock for commercial purposes first appeared in this part of the country about 1900, and that the methods of mining same were possibly crude as compared with present day equipment and machinery, and that as a result of this many operators did not use or haul away any phosphate rock except that which was in lumps and could be easily handled by men with forks.
However the record justifies the findings as a fact that phosphate sand or muck, was mined at the time the deed involved was executed, 1907, and that the expression “phosphate rock” was usually considered and understood to mean lump rock, sand or muck.
Prom the encyclopedias and text books it appears that calcium phosphate is the most abundant and important of the phosphates and makes up the larger part of so-called phosphate rock, from which is prepared large quantities of the soluble acid calcium phosphate used in making fertilizers. The rock itself is not suitable, because of its slight solubility, to be used by plants as a source of the phosphorous necessary for life, so it has to be converted into the soluable acid calcium phosphate.
Prom the examination of many authorities we believe that a fair definition of rock is given in the Columbia University’s Encyclopedia which says that rock in geology is applied not only to the solid or bed rock, but also to the mantle rock, the fragments of which have been detached from the solid rock and overlie it, such as clay, sand, gravel and broken rock.
The Encyclopedia Brittanica Volume 21, page 323, says:
“Such unconsolidated materials as sand, gravel, clay are justly included among rock as being mineral masses.”
The Professor of Geology at Yale University in his book entitled “Rocks and Minerals” says:
“A soft bed of clay or of volcanic ash, is as truly a rock as a mass of the hardest granite.”
Webster’s Unabridged Dictionary is giving the definition of the word “rock” says:
“Geologically; Mineral matter of any kind occurring naturally in large quantities. — May be consolidated (solid) or unconsolidated (disintegrated).”
Muck is defined in Webster’s International Dictionary as “Earth (including soft earth, gravel, hard pan and rock) to be, or being excavated.”
Machinery for the mining and handling of phosphate rock has been so improved in recent years that it is now profitable to ship all the phosphate rock including the lump rock, sand and muck.
“The owner of the mine may keep pace with the progress of invention and ingenuity, so far as is necessary to a profitable working of his property in competition with rivals. Hence, he may adopt new