General Zoölogy: Practical, Systematic and Comparative; Being a Revision and Rearrangement of Orton's Comparative ZoölogyAmerican book Company, 1903 - Всего страниц: 512 |
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Стр. 26
... eye spot , " and the contractile vacuole , both near the mouth ( Fig . 4 ) . Paramecium Material . The slipper animalcule is more readily obtained than almost any other of the protozoa . There are various ways of raising it in abundance ...
... eye spot , " and the contractile vacuole , both near the mouth ( Fig . 4 ) . Paramecium Material . The slipper animalcule is more readily obtained than almost any other of the protozoa . There are various ways of raising it in abundance ...
Стр. 32
... eye or with a lens study the hydra in situ , noting its color , shape , size , the body and the tentacles , the number and extensibility of the latter ; touch the body or the ten- tacles with a bristle and note the sensitiveness of the ...
... eye or with a lens study the hydra in situ , noting its color , shape , size , the body and the tentacles , the number and extensibility of the latter ; touch the body or the ten- tacles with a bristle and note the sensitiveness of the ...
Стр. 34
... eye is located ; note the sensi- tiveness of the various parts , particularly of the tube feet and of the branchiæ ... eyes , branchiæ , madreporic body , peristome , the radial nerve in the roof of each groove . Remove the upper half ...
... eye is located ; note the sensi- tiveness of the various parts , particularly of the tube feet and of the branchiæ ... eyes , branchiæ , madreporic body , peristome , the radial nerve in the roof of each groove . Remove the upper half ...
Стр. 37
... eyes , and swimmerets ; the position of the abdomen ; the manner in which food ( a scrap of fresh beef ) is held and pieces put into the mouth ; the movements of the jaws ; of the breathing organs ; the position of the eggs , if a ...
... eyes , and swimmerets ; the position of the abdomen ; the manner in which food ( a scrap of fresh beef ) is held and pieces put into the mouth ; the movements of the jaws ; of the breathing organs ; the position of the eggs , if a ...
Стр. 38
... eyes and feelers ; the mode of breathing ; the protective coloration of the body . Structure . Note the three regions of the body ( head , thorax , and abdomen ) , comparing with crayfish and spider ; study the structure of each region ...
... eyes and feelers ; the mode of breathing ; the protective coloration of the body . Structure . Note the three regions of the body ( head , thorax , and abdomen ) , comparing with crayfish and spider ; study the structure of each region ...
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General Zoölogy: Practical, Systematic and Comparative; Being a Revision and ... James Orton,Charles Wright Dodge Недоступно для просмотра - 2018 |
Часто встречающиеся слова и выражения
abdomen alimentary canal allantois amphibians antennæ apparatus artery auricle birds blood vessels body cavity bones brain branch calcareous called capillaries carnivorous cells cerebellum cerebrum cilia CLASS color consists coral cord corpuscles covered Crustacea cuttlefish digestive DODGE'S GEN dorsal eggs embryo epidermis esophagus eyes fibers fishes fluid forms frog ganglia gills glands gullet head heart higher animals hind horny insects intestine invertebrates jaws lacteals larvæ latter layer legs limbs living lobes lobster locomotion lower lungs magnified mammals mandibles maxillæ membrane Metazoa microscopic minute mollusks mouth muscles muscular nerve nervous system notochord opening Order organs pair plants plates polyps protoplasm Protozoa quadrupeds reptiles resemble respiration sea urchin segments shell side skeleton skin skull snail species spinal spines sponge starfish stomach structure substance surface tail teeth tentacles thorax tion tissue toes tongue tube upper usually valves ventricle vertebral column vertebrates whale wings worms
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Стр. 436 - There is no exception to the rule that every organic being naturally increases at so high a rate that, if not destroyed, the earth would soon be covered by the progeny of a single pair.
Стр. 450 - Beagle,' as naturalist, I was much struck with certain facts in the distribution of the organic beings inhabiting South America, and in the geological relations of the present to the past inhabitants of that continent.
Стр. 436 - The condor lays a couple of eggs and the ostrich a score, and yet in the same country the condor may be the more numerous of the two ; the Fulmar petrel lays but one egg, yet it is believed to be the most numerous bird in the world.
Стр. 14 - ... be taken off, we find a great mass of flesh, or what is technically called muscle, being the substance which by its power of contraction enables the animal to move. These muscles move the hard...
Стр. 438 - The air is swarming with insects — those little animated miracles. The waters are peopled with innumerable forms, from the animalcule, so small that one hundred and fifty millions of them would not weigh a grain, to the whale, so large that it seems an island as it sleeps upon the waves. The bed of the seas is alive with polypes, crabs, star-fishes, and with sand-numerous shell-animalcules.
Стр. 466 - All the foregoing rules and aids and difficulties in classification are explained, if I do not greatly deceive myself, on the view that the natural system is founded on descent with modification; that the characters which naturalists consider as showing true affinity between any two or more species, are those which have been inherited from a common parent...
Стр. 407 - It has not been sufficiently insisted on, that in the various branches of Social Science there is an advance from the general to the special, from the simple to the complex, analogous with that which is found in the series of the sciences, from Mathematics to Biology. To the laws of quantity comprised in Mathematics and...
Стр. 469 - They are no more the producers of vital phenomena than the shells scattered in orderly lines along the sea-beach are the instruments by which the gravitation - force of the moon acts upon the ocean. Like these, the cells mark only where the vital tides have been and how they have acted.
Стр. 399 - Gibbon-apes has the remarkable power of emitting a complete octave of musical notes. The human voice, taking the male and female together, has a range of nearly four octaves. Man's power of speech, or the utterance of articulate sounds, is due to his intellectual development rather than to any structural difference between him and the Apes. Song is produced by the glottis, speech by the mouth.
Стр. 274 - ... modified in accordance with the habits of the creature. They are, therefore, of great zoological value ; for, such is the harmony between them and their uses, the naturalist can predict the food and general structure of an animal from a sight of the teeth alone. For the same reason, they form important guides in the classification of animals; while their durability renders them available to the paleontologist in the determination of the nature and affinities of extinct species, of which they...