The Carboniferous Limestone series which succeeds the Calciferous Sandstone consists of a middle group of sandstones, shales, coals and ironstones, with a limestone group above and below.
In the former direction only the Calciferous Sandstone series is represented, and in the latter all the Carboniferous divisions are well developed.
The coarse agglomerate filling the old volcano on the top of Arthur's Seat is associated with the eruption of the volcanic rocks of Calciferous Sandstone age near Edinburgh.
The upper portion of the Calciferous Sandstone series, overlying the Hailes sandstone, embraces the valuable oil-shales, which give rise to one of the chief industries of the Lothians.
Calciferous Sandstone: Lower Silurian (or Caradoc and Bala, Llandeilo and Arenig Formations).
Southward and eastward these rocks dip conformably beneath the Lower Carboniferous cement stone series of the Calciferous Sandstone group.
They are best developed about Kirkbean, where they include a basal red breccia followed by conglomerates, grits and cement stones of Calciferous Sandstone age.
The rock formation is gneiss, covered by heavy masses of calciferous limestone containing garnets.
It was probably a rock of the calciferous sandstone type containing garnets, quartz and flint, which are met in the vicinity.
The Lower Wealden or Hastings Sand consists of sand, sandstone, andcalciferous grit, clay, and shale, the argillaceous strata predominating.
Here there is an ascending sequence from the Calciferous Sandstone, through the Carboniferous Limestone with thin coals formerly worked, to the Coal Measures, the strata being inclined at high angles to the north.
The Carboniferous rocks of Arran include representatives of the Calciferous Sandstone, the three subdivisions of the Carboniferous Limestone series, and to a small extent the Coal Measures, and are confined to the north part of the island.
The lowest group is on the horizon of the Calciferous Sandstone series, being visible at Corrie where it underlies the Corrie limestone, and is traceable southwards beyond Brodick.
The sandy limestones of the Calciferous record the transition stage from the Cambrian when some sand was still brought in from shore.
The Calciferous sandstones of McLaren, or Tweedian group of Tate in Scotland.
Lower limestone shales of the south and centre of | England with marine fossils, and the Calciferous | Sandstone group of Scotland with marine, estuarine and \terrestrial fossils.
The plateau type was most extensively developed during the formation of the Calciferous Sandstone; the puy type was of somewhat later date.
The "A" Spring is situated on Spring avenue, a little beyond the Empire Spring, on the eastern side of a steep bluff of calciferous sand rock, upon grounds which could be made quite attractive by a moderate outlay.
The calciferous sand rock, which is a silicious limestone.
The northern half of the county is occupied by the elevated ranges of Laurentian rocks; flanking these occur the Potsdam, Calciferous and Trenton beds, which appear in succession in parallel bands through the central part of the county.
These later genera however have no calciferous glands or oesophageal pouches of any description, structures which are also absent among the Criodrilinae.
They are peculiar among the aquatic families in having complex glands appended to the oesophagus which recall the calciferous glands of the earthworms.
Into this open in each of segments VII, VIII, IX a pair of calciferous glands; these are diverticula of the gut with much folded walls, the cells of which secrete carbonate of lime.
As a rule the alimentary tract is simplified, there being no gizzard or glandular appendices of the oesophagus comparable to the calciferous glands of most earthworms.
In Microscolex, Chilota and Yagansia, moreover, there is a further degeneration in the disappearance of the calciferous glands.
In a number which are associated into a sub-family Eudrilacea there are two paired calciferous glands and a single unpaired one, while the paired nephridia open by a large pore on to the exterior.
In the alimentary canal a gizzard in segment VI is to be noted and three pairs of calciferous glands in segments VII-IX.
Besides the free calciferous cells in which no nucleus was visible, other and rather larger free cells were seen on three occasions; and these contained a distinct nucleus and nucleolus.
Calciferous cells adhered to many parts of these mulberry-like masses, and their gradual disappearance could be traced while they still remained attached.
The large quantity of carbonate of lime secreted by the calciferous glands apparently serves to neutralise the acids thus generated; for the digestive fluid of worms will not act unless it be alkaline.
With respect to the function of the calciferous glands, it is probable that they primarily serve as organs of excretion, and secondarily as an aid to digestion.
It was thus evident that the concretions are formed from the lime contained within the free calciferous cells.
These calciferous glands are highly remarkable, for nothing like them is known in any other animal.
From this and other such cases I am led to suspect that the calciferous cells are developed from the larger nucleated ones; but how this was effected was not ascertained.
They are composed chiefly of greenish-colored fissile sandstones and calciferous grits, in which we meet a few fossils, very imperfectly preserved.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "calciferous" in a variety of sentences. We hope that you will now be able to make sentences using this word.
