. Annals and magazine of natural history : including zoology, botany and geology. 426 Miscellaneous. the Anacharis is by far the commonest plant in the Whiteadder; and its minute flowers whiten tlie surface of the water. It is to me quite plain that it is of recent introduction. " My explanation is this : The plant has been introduced into the lake at Dunse Castle, with alien aquatics, for in the lake there are several foreigners. Then it had multiplied itself there until it took thick possession of some parts of the lake. Now, while they were paddling amongst this herbage, some small bit
. Annals and magazine of natural history : including zoology, botany and geology. 426 Miscellaneous. the Anacharis is by far the commonest plant in the Whiteadder; and its minute flowers whiten tlie surface of the water. It is to me quite plain that it is of recent introduction. " My explanation is this : The plant has been introduced into the lake at Dunse Castle, with alien aquatics, for in the lake there are several foreigners. Then it had multiplied itself there until it took thick possession of some parts of the lake. Now, while they were paddling amongst this herbage, some small bits may have adhered to the plumage of the wild ducks and other aquatic birds, and by their means they have been carried to the Whiteadder. This, as the crow flies, is about two miles from Dunse Castle, but Whitehall is six miles ; Mr. G. Lawson stated that the Anacharis had appeared in a some- what similar manner in the neighbourhood of Derby. Mr. Joseph Whittaker of Breadsall, from whom Mr. Lawson had received a com- munication on the subject, had been for some years engaged in the examination of the Potamogetons of the neighbourhood; but had never met with the Anacharis until recently, although it is now in great abundance. 4. "Report on the state of vegetation in the Edinburgh Botanic Garden, from Feb. 14 to March 13, 1851," by Mr. M'Nab. MISCELLANEOUS. An Account of three netv species oy Animalcules. By Joshua Alder, Esq. While examining a specimen of Sertiilaria pumila, taken from the rocks at Whitburn, under the microscope, I was struck with the ap- pearance of what seemed to be a very minute parasitic zoophyte, several specimens of which were attached to different parts of the Sertularia. The body was of a vase or cup-form, expanded at the top (fig. 1), and set round with numerous pointed tentacles, abruptly thickened towards the base, and forming more than one row : they had very little motion, but were oc- casionally bent forwards, and the whole w
Size: 1195px × 2090px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1850, bookpublisherlondon, bookyear185
