Ferns, Sigillariæ, Calamites, and the usual plants of the carboniferous flora, may be found in every coal-mine; and the Devonian limestones of the South of Ireland yield ferns and Lepidodendra. In Forfarshire the lower Devonian shales abound in the foliage of aquatic, apparently fluviatile, plants.[190] [190] See Memoir on the Telerpeton; Geol. Journ. vol. viii. p. 106. A list of some of the most productive British localities is subjoined. In addition to the suggestions already given as to the mode of collecting specimens, it may be necessary to state that the leaves in the tertiary marls and clays are generally very delicate and friable, and liable to flake off in the state of a carbonaceous film. This may, in a great measure, be prevented by carefully covering them with a thin coating either of mastic varnish, or gum-water, before they are placed in the cabinet. In extracting these specimens, a broad chisel will be found the most convenient instrument. In searching for fossils in coal-mines, the collector should remember that the ironstone nodules often contain beautiful examples of the leaves of ferns, and fruits of Lepidodendra. These nodules, when of an oblong shape, should be split open in a longitudinal direction, by a smart blow of a hammer, and the inclosed leaf will thus be exposed, as shown in _Lign. 3, figs. 2, 3_, _ante_, p. 69. * * * * * BRITISH LOCALITIES OF FOSSIL VEGETABLES. [Sidenote: BRITISH LOCALITIES OF FOSSIL VEGETABLES.] Allenbank, Berwickshire _Carb._ Stems of Conifers, &c. Alum Bay, Isle of Wight _Tert._ { Fruit, dicotyledonous leaves, { lignite; Charge, stems and { seed-vessels. Ashby-de-la-Zouch, } _Carb._ { Coal plants in great abundance. Leicestershire } Bignor, Sussex } _Cret._ } Fucoids. } _Firestone_ } Binstead Quarries, near } _Tert._ { Charæ, stems and seed-vessels. Ryde, Isle of Wight } Blackdown, Devonshire _Gr. Sand._ Silicified wood--coniferous. Bognor, Sussex _Tert._ { Coniferous and monocotyledonous { wood; washed { up on the shore. Bolton, Lancashire _Carb._ Lepidodendra, Sigillariæ, &c. Bournemouth, Hants _Tert._ { Dicotyledonous leaves.[191] [191] Fruits and Fern-leaves have been collected here by Mr. Beckles and stems of a species of _Arundo_, by Mr. Alfred Woodhouse. Brook-point, Isle of Wight _Wealden_ { Cycads, and coniferous { wood. Burdie House, near Edinburgh _Carb._ Ferns, wood, &c. Calbourn, Isle of Wight _Tert._ Charæ, stems and fruits. Camerton, near Bath _Carb._ Usual plants of the coal.