The Bladderwrack (Fucus vesiculosus), Kelpware, or Our Lady's Wrack, is found on most of our sea coasts in heavy brown masses of coarse-looking Sea Weed, which cover, and shelter many small algae. Kelp is an impure carbonate of soda containing sulphate, and chloride of sodium, with a little charcoal.
By its characteristic bladders, or vesicles studded about the blades of the branched narrowish fronds, this Sea Weed may be easily known.
These bladders are full of a glutinous substance, which makes the weed valuable both as a remedy for the glandular troubles of scrofula, and, when bottled in rum, as an embrocation, such as is specially useful for strengthening the limbs of rickety, or bandy-legged children. Against glandular swellings also the weed is [504] taken internally as a medicine, when burnt to a black powder. An analysis of the Bladderwrack has shown it to contain an empyreumatic oil, sulphur, earthy salts, some iron, and iodine freely. Thus it is very rich in anti-scrofulous elements.
The fluid extract of this Sea Weed has the long standing reputation of safely diminishing an excess of personal fat. It is given for such a purpose three times a day, shortly after meals, in doses of from one to four teaspoonfuls. The remedy should be continued perseveringly, whilst cutting down the supplies of fat, starchy foods, sugar, and malt liquors. When thus taken (as likewise in the concentrated form of a pill, if preferred) the Bladderwrack will especially relieve rheumatic pains; and the sea pod liniment dispensed by many druggists at our chief marine health resorts, proves signally efficacious towards the same end. Furthermore, they prepare a sea-pod essence for applying on a wet compress beneath waterproof tissue to strumous tumours, goitre, and bronchocele; also for old strains and bruises.
This Sea Weed should not be obtained when too fully matured, as it quickly undergoes decomposition.
Wrack is Sea Weed thrown ashore, from Vrage, to reject. Wrack Grass (Zostera Marina), is a marine plant with long grass-like leaves.
There are four common Fuci on our coasts—the Nodosus (Knobbed
Wrack), the Vesiculosus (Bladder Wrack), the Serratus
(Saw-edged Sea Weed), and the Caniculatus (Channeled Sea Weed).
It is by reason of its contained bromine and iodine as safe medicinal elements, the Fucus vesiculosus acts in reducing fatness; these elements stimulating all the absorbent glands of the body to increased activity. [505] In common with the other Fuci it furnishes mannite, an odorous oil, a bitter principle, mucilage, and ash, this last constituent abounding in the bromine and iodine.
For internal use, a decoction may be made with from two to four drachms of the weed to a pint of water, boiled together for a few minutes; and for external application to enlarged or hardened glands, the bruised weed may be applied as a cold poultice.
This Bladder Wrack is reputed to be the Anti-polyscarcique nostrum of Count Mattaei.