And the “ Great Carolina Marl Bed.” 83 
When washed free of the adhering sand, I do not 
doubt they will reach 59 to 60 per cent. Bone Phos- 
phate of Lime. An analysis of phosphatic rock, 
obtained from Beaufort River, off Beaufort, afforded : 
Phosphoric Acid, 25.90 per cent., equivalent to Bone 
Phosphate of Lime, 56.54 per cent. Properly cleaned, 
I do not doubt that this deposit would afford 57 to 59 
per cent. Phosphate of Lime.” 
Concerning the deposit in the Edisto River, Prof. 
Shepard further states: The quality is excellent, as 
may be seen by the following analysis: + 
Phosphoric Acid, : : 28.4 peksecnt: 
Bone Phosphate of Lime equiva- 
lent, : O32. Lonpers Cenk: 
The phosphatic rei is ae by powerful dredging 
machines, and washed by Lebby’s Patent Washer, 
which furnishes a clean rock. In Bull River the de- 
posit is gathered, partially, by hand, at low stages of 
the tide. With the facilities at the command of the 
Company it can furnish two thousand tons of rock per 
week. The great resources and appliances of the Com- 
pany for excavating, washing, crushing and grinding 
rock enable them to offer their Azgh grade Phosphate 
at the lowest rates. The Phosphate is furnished either 
crushed to a uniform size, suitable for manufacturers, 
or ground to a fine powder. Each consignment is 
sampled and analyzed by Prof. Shepard. 
The Mills of the Company are situated on the 
Cooper River (Robb’s Mills) and at Oak Point, Bull 
River, with a capacity for grinding to a fine powder 
one hundred tons per day. 
