On Molecular and Microscopic Science, Volume 2J. Murray, 1869 |
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Common terms and phrases
aërated Amoeba animal animalcules Annelids antennæ Ascidians attached axis blood body branches bristles buds calcareous canals carapace cavity cells centre chambers cilia circulation coasts colour colourless consists contractile coral covered crab creatures Crustacea cylindrical Decapods Difflugia digestive disk edges eggs exterior extremity eye-specks eyes feet female fibres filaments fixed float foot-jaws Foraminifera Gastropods gelatinous genera genus gills greater number gullet head hollow horny Hydra Hydræ Hydrozoa inch Infusoria interior jaws jointed lamellæ larvæ liquid live mass medusæ membrane microscopic minute mollusks motion mouth muscles muscular nerve-centres nerves ocean organs orifice pair papillæ particles perforated plates polypes polypites pores protruded pseudopodia radiating rays respiratory ring Rotifers round rows sarcode sea-pens seas segments shell side skin slender soft species spicules spines sponges star-fishes stem stomach structure substance surface swimming Synapta tail tentacles thread-cells transparent transverse tubes tubular Vorticella whole worm zooids zoophytes
Popular passages
Page 14 - ... a little particle of apparently homogeneous jelly changing itself into a greater variety of forms than the fabled Proteus, laying hold of its food without members, swallowing it without a mouth, digesting it without a stomach, appropriating its nutritious material without absorbent vessels or a circulating system, moving from place to place without muscles, feeling (if it has any power to do so) without nerves, propagating itself without genital apparatus, and not only this, but in many instances...
Page 143 - Rising at once from an unfathomable ocean, it extends 1000 miles along the coast, with a breadth varying from 200 yards to a mile, and at an average distance of from 20 to 30 miles from the shore, increasing in some places to 60 and even 70 miles. The great arm of the sea included between it and the land is nowhere less than 10, occasionally 60...
Page 80 - ... matter upon the earth. For when this matter is dissolved or suspended in water, in that state of comminution and decay which immediately precedes its final decomposition into the elementary gases, and its consequent return from the organic to the inorganic world, these wakeful members of...
Page 143 - ... of a tropical climate. The lagoon, which encompasses it like an enormous moat, is 30 fathoms deep, and is hemmed in from the ocean by a coral band of the usual kind, at a distance varying from half a mile to three miles. Barrier-reefs are of precisely the same structure as the two preceding classes, from which they only differ in their position with regard to the land. A barrier reef off the north-east coast of the continent of Australia is the grandest coral formation existing. Rising at once...
Page 140 - ... fathoms, beyond which the sides plunge at once into the unfathomable depths of the ocean, with a more rapid descent than the cone of any volcano. Even at the small distance of some hundred yards no bottom has been found with a sounding-line a mile and a half long. All the coral at a moderate depth below water is alive, all above is dead, being the detritus of the living part, washed up by the surf, which is so tremendous on the windward side of the tropical islands of the Pacific and Indian Oceans...
Page 12 - ... instinct — the intelligence of the higher mammalia bordering on reason — and lastly, the improvable reason of man himself presents us with a picture of the ever increasing dominion of the mind over matter.
Page 80 - ... particles, and turn them back into the ascending stream of animal life. Having converted the dead and decomposing particles into their own living tissues, they themselves become the food of larger Infusoria...
Page 12 - Science," as a noteworthy instance. Endeavoring to prove the eternity of the soul, she says : " To suppose that the vital spark is evanescent while there is every reason to believe that the atoms of matter are imperishable, is admitting the superiority of mind over matter ; an assumption altogether at variance with the result of geological sequence ; for Sir Charles Lyell observes that sensation, instinct and sensation of the higher mammalia bordering on reason, and lastly, the improvable...
Page 140 - All the coral at a moderate depth below water is alive — all above is dead, being the detritus of the living part, washed up by the surf, which is so tremendous on the windward side of the tropical islands of the Pacific and Indian Oceans, that it is often heard miles off, and is frequently the first warning to seamen of their approach to an atoll.
Page 140 - An atoll or lagoon island consists of a chaplet or ring of coral, enclosing a lagoon or portion of the ocean in its centre. The average breadth of the part of the ring above the surface of the sea is about a quarter of a mile, oftener less, and it seldom rises higher than from 6 to 10 or 12 feet above the waves.