. The commercial products of the sea; or, Marine contributions to food, industry and art. Fisheries; Seafood; Commercial products. 316 The Commercial Products of the Sea. gardens ; and the bunches of vesicular grains which sup- port these plants at the surface of the water, they name tropical grapes. Up to the present time these seaweeds have remained unutilized, doubtless because of the cost of transport. Some of the species of seaweed are richer in ash than others. The most generally diffused species, the Fucus vesiculosus, or bladder-wrack, seems to withdraw the largest amount' of saline an
. The commercial products of the sea; or, Marine contributions to food, industry and art. Fisheries; Seafood; Commercial products. 316 The Commercial Products of the Sea. gardens ; and the bunches of vesicular grains which sup- port these plants at the surface of the water, they name tropical grapes. Up to the present time these seaweeds have remained unutilized, doubtless because of the cost of transport. Some of the species of seaweed are richer in ash than others. The most generally diffused species, the Fucus vesiculosus, or bladder-wrack, seems to withdraw the largest amount' of saline and earthy matters from the sea water. Pereira, in analysing the ash, found in it nearly 20 per cent, of common salt, and 11 to 12 per cent, each of potash, soda, and lime, and 24^ per cent, of sulphuric acid. Fig. Varieties of Seaweed. Fresh weed usually yields 16 per cent, of ash, or 320 pounds to the ton of weed; and each ton of ash would yield 18 lbs. of phosphates, iron and lime, 38 lbs. of potash, and other mineral substances, making up a total of 164 lbs. of valuable saline matter, or more than one-half of the whole ash. Valuable as are many of these ingredients to plants, the application of seaweed as a manure has some remarkable properties which do not appear to be explained by Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Simmonds, P. L. (Peter Lund), 1814-1897. New York, D. Appleton and company
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectfisheries, bookyear18
