Publisher's Synopsis
Excerpt from Report of the North Carolina Geological Survey: Agriculture of the Eastern Countries; Together With Description of the Fossils of the Marl Beds
In order to increase their value, I have been led to enter tain the opinion, that they may be washed. In this Operae tion the sand may be separated from the valuable parts. This opinion, however, requires a confirmation by experiment. The material which remains after the sand is separated, con tains phosphate of lime, carbonate of lime and magnesia, pot ash and soda; those elements which make the marl the most valuable. If any cheap process for washing the marls could be employed, the material could be transported to most of the midland counties with profit.
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