. Annual report of the Board of Control of the State Agricultural Experiment Station at Amherst, Mass. Agriculture -- Massachusetts Periodicals. 184 AGEICULTURAL EXPERIMENT STATION. [Jan. Phosphate Slag. [I. German " Pliosphate Slag," New York. II. " Phosphate Slag " sent on from England.] Moisture at 100^ C, . . Ferric oxide and alutQinum oxide, Total phosphoric acid, . Calcium oxide, .... Magnesium oxide, Insoluble matter, ..... Not determined. This material has been of late introduced into our markets in a fine-ground state as " phosphate meal," manufactured of
. Annual report of the Board of Control of the State Agricultural Experiment Station at Amherst, Mass. Agriculture -- Massachusetts Periodicals. 184 AGEICULTURAL EXPERIMENT STATION. [Jan. Phosphate Slag. [I. German " Pliosphate Slag," New York. II. " Phosphate Slag " sent on from England.] Moisture at 100^ C, . . Ferric oxide and alutQinum oxide, Total phosphoric acid, . Calcium oxide, .... Magnesium oxide, Insoluble matter, ..... Not determined. This material has been of late introduced into our markets in a fine-ground state as " phosphate meal," manufactured of the " Peine-Thomas Scoria.'' P. Weidinger, No. 76 Pine Street, New York City, who has advertised the sale of the above material for trial, makes the following statement: — '' We ofier to the American fertilizer trade the article above stated, whose rapid and successful introduction into various countries, with constantly increasing demand, gives us a guarantee that its importance for agriculture will not be underrated. This is a very finely ground phosphate meal, obtained from the so-called ' Peine-Thomas Scoria,' through the dephosphorization of pig iron, after the patented method of Sidney Gilchrist Thomas. The dephosphorization of the iron takes place by melting the iron with lime in a current of air, a proceeding by which pig iron, rich in phosphorus, is converted into steel, free from phosphorus (ingot iron). In this manner the phosphorus of the pig iron is converted into phosphoric acid, which, uniting with the lime added, forms phosphate of lime. The melted mixture of phosphate of lime with excess of lime and combinations of the iron and manganese, obtained by this proceeding, is called ' Thomas Scoria.' It is brought into the market for the purposes of agriculture in a finely ground ;. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustra
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