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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1855 Excerpt: ...then published an account of this plant, and Dr. Johnston, on reading it, immediately recognised the description to be that of the same weed which he had seen some years before. On examining the loch of Dunse Castle, he found that this water-weed had not only accumulated there in great profusion, but that, having made its way out of the loch, it was forming matted patches in several places down the Whiteadder, in its course to the Tweed. In the same season it had appeared in the Lene, a tributar)' to the Trent in Nottinghamshire; and propagating itself with its usual rapidity, it soon formed so large an amount of aquatic herbage, that it threatened to block up one of the two streams into which the Trent there divides; while on the Trent itself it afterwards grew in such profusion, that in some parts of the river fishing became quite impracticable, the fishermen finding their nets unable to compete with this new and formidable vegetable hindrance. The plant was also found in the Watford locks, in Northamptonshire, growing in numerous and immense tangled masses. It was in the summer of 1849 that this troublesome water-weed was first discovered in Derbyshire and Vol. v. в в Staffordshire, where it formed, as it were, small green meadows on the water, both in the Trent and the adjoining canals; in 1850 it had gathered in profusion near Rugby in Warwickshire, and in the following year it had appeared in the Cam at Cambridge, behind the colleges, and by its growth so clogged up the river, that the barges which had to make their way through its clumps required the aid of extra horses. The collegians were, by its masses, prevented from rowing, as it not only impeded the course of a boat, but would even overturn it; while the most skilful swimmer became ...