They can live in brackish and even in sea water.
Shell with prominent spire; distant from right tentacle, generally appendiculated; brackish water or fluviatile.
In the brackish waters of the east coast sea fish are found, together with pike, perch and other fresh-water forms. The crayfish is common in many places in central and southern Sweden.
Its surroundings are bleak and sterile and its waters brackish and polluted with the drainage of the neighbouring city for nearly four centuries.
The so-called lakes on the coast of the Adriatic north and south of the promontory of Gargano are brackish lagoons communicating with the sea.
The lower course of the Desaguadero is known as the Salado because of the .brackish character of its water.
Between Hatteras and Lookout is Raleigh Bay and between Lookout and Fear is Onslow Bay; and between the chain of islands and the deeply indented mainland Currituck, Albemarle, Pamlico and other sounds form an extensive area, especially to the northward, of shallow, brackish and almost tideless water.
In the rainy season this valley becomes a sea, flooded by the discharge of the Khanega; in summer the Arabs dig holes here which supply them with brackish water.
Lancelets are found in brackish or salt water, generally near the coast, and have been referred to several genera and many species.
Water is scarce and brackish, and is chiefly found at the bottom of low ranges of hills, which abound in some parts; and the inhabitants of the extensive sandy tracts suffer greatly from the want of it.
Which live in brackish water, especially Congeria.
STICKLEBACK, the name applied to a group of small fishes (Gastrosteus) which inhabit the fresh and brackish waters as well as the coasts of the temperate zone of the northern hemisphere.
In the centre of Whairikauri is a large brackish lake called Tewanga, which at the southern end is separated from the sea by a sandbank only i 50 yds.
Mactra, the right valve of the Rangia; brackish water, Florida.
Limnocardiidae.-Siphons very long, united throughout; shell gaping; two adductors; brackish waters.
From the latter a canal or branch led to the Lake of Moeris, which, until the 3rd century B.C., filled the deep, depression of the Fayum, but is now represented only by the strongly brackish waters of the Birket el~KerUn, left in the deepest part.
P. 459), or by pouring the water of a brackish stream over a fire of (saline) wood and collecting the ashes, as was done in ancient Germany (Tac. Ann.
In this chain of lovely upland lakes, some fresh, some brackish, some completely closed, others connected by short channels, the chief links in their order from north to south are: - Zwai, communicating southwards with Hara and Lamina, all in the Arusi Galla territory; then Abai with an outlet to a smaller tarn in the romantic Baroda and Gamo districts, skirted on the west sides by grassy slopes and wooded ranges from 6000 to nearly 9000 ft.
On such an island, in the centre of which a borehole is put down, brackish water may be reached far below the sea-level; the salt water forming a saucer, as it were, in which the fresh water lies.
But before this was accomplished the filtration of the effluent became defective, and brackish water was received, which rapidly increased nearly to the saltness of the inflow.
During the rains they are formidable torrents, but with the return of the fair weather they dwindle away, and during the hot season, with a few exceptions, they almost dry up. Clear and rapid as they descend the hills, on reaching the lowlands of the Konkan they become muddy and brackish creeks.
The tract in which Andkhui stands is fertile, but proverbially unhealthy; the Persians account it "a hell upon earth" by reason of its scorching sands, brackish water, flies and scorpions.
The eastern depression, known as the East African trough or rift-valley, contains much smaller lakes, many of them brackish and without outlet, the only one comparable to those of the western trough being Lake Rudolf or Basso Norok.
Fish, which abound in the Jordan and in the brackish spring-fed lagoons that exist in one or two places around its shores (such as `Ain Feshkhah), die in a very short time if introduced into the main waters of the lake.
These animals also occur in the desert district south of the Tarim; but are most abundant in the deserts and mountains to the southward of Kuruktagh, where there are a few brackish-water pools, and are also common in the barren mountains between Kuruktagh and Choetagh.
5), a common British hydroid, produces gonophores; so also does Cordylophora, a form inhabiting fresh or brackish water.
Although many plants typical of fresh water are able to grow also in brackish water, there are only a few species which appear to be quite confined to the latter habitats in this country.
In the later stages arms of the sea were cut off and were converted at first into lagoons and then into brackish or fresh-water lakes which continued to occupy much of S.
Gobius alcocki, from brackish and fresh waters of Lower Bengal, is one of the very smallest of fishes, not measuring over 16 millimetres (= 7 lines).
There is an extensive swampy lagoon in Eleuthera, the water of which is fresh or nearly so; and brackish lagoons also occur, as in Watling Island.
This was followed by the Sarmatian period, when Hungary was covered by extensive lagoons, the fauna being partly marine and partly brackish water.
This region is relatively flat, in some districts slightly marshy, but the water oozing from the soil is often brackish, and in places large shallow salt lakes are formed.
As far as the European kinds are concerned, all may be met with in the brackish water of certain littoral districts.
Although drinkable, the water of the lake seems at times at least to be very slightly brackish, and it was supposed by some that no outlet existed until, in 1874, Lieutenant Cameron showed that the surplus water was discharged towards the upper Congo by the Lukuga river, about the middle of the west coast.
For the water supply the Aztecs used the main causeway through their city as a dam to separate the fresh water from the hills from the brackish water of Texcoco, and obtained drinking water from a spring at the base of the hill of Chapultepec. The Spaniards added three other springs to the supply and constructed two long aqueducts to bring it into the city.
Tidal waters furnish minute whitebait, and the mud-flats of salt or brackish lagoons and estuaries flounders - both very delicate eating.
From a study of remains of the mollusca, brachiopoda and other marine organisms they will determine the shallow water (littoral) and deep water (abyssal) regions of the surrounding oceans, and the clear or muddy, salt, brackish or fresh character of its inland and marginal seas; and even the physical conditions of the open sea at the time will be ascertained.
Cunnington, in the brackish water of lake Birket el Kerun in the Egyptian Fayum.
The brackish water formations occur in some parts of the same general areas, while the terrestrial formations are found in and about the western mountains.
In \Vashington the Eocene is represented by the Puget series of brackish water beds, with an estimated thickness exceeding that of the marine formations of Oregon.
Glaucomyidae.-Siphons very long and united; foot small; shell thin, with deep pallial sinus; fresh or brackish water.
Andalusia consists of a great plain, the valley of the Guadalquivir, shut in by mountain ranges on every side except the S.W., where it descends to the Atlantic. This lowland, which is known as Andalucia Baja, or Lower Andalusia, resembles the valley of the Ebro in its slight elevation above sea-level (300-400 ft.), and in the number of brackish lakes or fens, and waste lands (despoblados) impregnated with salt, which seem to indicate that the whole surface was covered by the sea at no distant geological date.
The xerophytic structures found in some of the plants might seem to corroborate this view; but similar structures are assumed by many plants when dwelling in brackish marshes and morasses.
The water of the sea, though slightly brackish and not very clear, is generally used for drinking.
At the north end of the plain is `Ain et-Tineh ("spring of the fig-tree"), also a brackish spring with a good stream; south of the plain is `Ain el-Bardeh ("the cold spring"), which is sweet, but scarcely lower in temperature than the others.
Though situated near the mountainous section of southern Buenos Aires, the immediate vicinity of the city is low and swampy, its water is brackish, and it has been decidedly unhealthy; but a water supply from the Sauce Grande, 50 m.
The conceivable variations in the conditions which would count in algal life are variations in the chemical character of the water - whether fresh, brackish or salt; or in the rate of movement of the water, whether relatively quiet, or a stream or a surf; or in the degree of illumination with the depth and transparency of the water.
A considerable number of springs in the country are brackish, being impregnated with chemicals of various kinds or (when near a town) with sewage.
Beyond the Atrek and other rivers watering the northern valleys a few brackish and intermittent rivers lose themselves in the Great Kavir, which occupies the central and western parts of the province.
Experiments made by removing mussels from salt water to brackish, and finally to quite fresh water show that it is even more tolerant of fresh water than the oyster; of thirty mussels so transferred all were alive after fifteen days.
Sluggish brackish streams creep along between banks of fetid black mud.
These lakes are expanses of brackish waters that spread or Lakes.
They consist, in most parts of the country, of unconsolidated sediments, consisting of gravel, sand, clay, &c., together with large quantities of tuff, volcanic agglomerate, &c. Some of the sedimentary formations are of marine, some of brackish water, and some of terrestrial origin.
The inhabitants of the waters of this geographical phase include mollusca, which are supposed to have lived in brackish or fresh water, such as Anthracomya, Naiadites, Carbonicola, and many forms of Crustacea, e.g.
It is represented now by the brackish-water lake of the Birket-el-Kerun.
Regarding the Echinoderms as a whole in the light of the foregoing account, we may give the following analytic summary of the characters that distinguish them from other coelomate animals: They live in salt or brackish water; a primitive bilateral symmetry is still manifest in the right and left divisions of the coelom; the middle coelomic cavities are primitively transformed into two hydrocoels communicating with the exterior indirectly through a duct or ducts of the anterior coelom; stereom, composed of crystalline carbonate of lime, is, with few exceptions, deposited by special amoebocytes in the meshes of a mesodermal stroma, chiefly in the integument; reproductive cells are derived from the endothelium, apparently of the anterior coelom; total segmentation of the ovum produces a coeloblastula and gastrula by invagination; mesenchyme is formed in the segmentation cavity by migration of cells, chiefly from the hypoblast.
All the fossil plants and animals of every kind are brought from this continent into a great museum; the latitude, longitude and relative elevation of each specimen are precisely recorded; a corps of investigators, having the most exact and thorough training in zoology and botany, and gifted with imagination, will soon begin to restore the geographic and physiographic outlines of the continent, its fresh, brackish and salt-water confines, its seas, rivers and lakes, its forests, uplands, plains, meadows and swamps, also to a certain extent the cosmic relations of this continent, the amount and duration of its sunshine, as well as something of the chemical constitution of its atmosphere and the waters of its rivers and seas; they will trace the progressive changes which took place in the outlines of the continent and its surrounding oceans, following the invasion§ of the land by the sea and the re-emergence of the land and retreatal of the seashore; they will outline the shoals and deeps of its border seas, and trace the barriers which prevented intermingling of the inhabitants of the various provinces of the continent and the surrounding seas.
The _______________ water of el-Kerun is ___________ brackish, though de - -~--- 3/4 rived from the Nile, which has at all seasons _~ il amuchhighenlevel.