1862 London Exhibition: Catalogue: Class I.: Edward Packard and Co
259. PACKARD, EDWARD, and CO., Ipswich.
Specimens of coprolites, fossil bones, and super- phosphates of lime manufactured therefrom.
The following are exhibited:—
Coprolites (so called) and fossil bones and remains of animals, from the Upper Green Sand, washed and reduced to a fine powder ready for treating with acid, containing 60 per cent. of phosphates. Price 50s. to 55s. per ton.
The Suffolk Craig variety of mineral phosphates, which form the cheapest source of phosphates yet discovered, similarly prepared, yielding 50 per cent. of phosphates. Price 45s. to 50s. per ton, according to the demand.
Super- or bi-phosphate of lime, manufactured from the above, well adapted to root cultivation. Price 80s. to 90s. per ton, according to quality.
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