Outlines of natural history for beginners |
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Página 12
... attach itself to stones , floating pieces of wood , or the stems of water - plants . It can also , by means of this disc , glide slowly , like a snail , over the surface to which it is fixed ; but it can detach itself entirely when it ...
... attach itself to stones , floating pieces of wood , or the stems of water - plants . It can also , by means of this disc , glide slowly , like a snail , over the surface to which it is fixed ; but it can detach itself entirely when it ...
Página 33
... attached to the bases of the n N. Fig . 14. Diagram to show the position of the internal organs of the Lobster as they would be seen if the animal were cut across behind the head . h Heart ; b b Gills ( the vessels containing pure or ...
... attached to the bases of the n N. Fig . 14. Diagram to show the position of the internal organs of the Lobster as they would be seen if the animal were cut across behind the head . h Heart ; b b Gills ( the vessels containing pure or ...
Página 34
Henry Alleyne Nicholson. to their being attached to the legs , the animal's respiratory process depends very much upon its moving about , since the movements of the legs contribute considerably to the bringing in of fresh water to the ...
Henry Alleyne Nicholson. to their being attached to the legs , the animal's respiratory process depends very much upon its moving about , since the movements of the legs contribute considerably to the bringing in of fresh water to the ...
Página 35
... attached to the jaws . The spider , there- fore , has truly four pairs of legs , and it should thus never be confounded with the genuine Insects , all of which pos- sess no more than three pairs of legs . All the legs are long and ...
... attached to the jaws . The spider , there- fore , has truly four pairs of legs , and it should thus never be confounded with the genuine Insects , all of which pos- sess no more than three pairs of legs . All the legs are long and ...
Página 36
... attached to the jaws ; a Abdomen . B , Front portion of the head of the same , showing the eight eyes ( ƒ ) , and the poison - jaws ( n ) . C , Under side of the head and trunk , showing the true jaws ( m ) , the lower lip ( 7 ) , and ...
... attached to the jaws ; a Abdomen . B , Front portion of the head of the same , showing the eight eyes ( ƒ ) , and the poison - jaws ( n ) . C , Under side of the head and trunk , showing the true jaws ( m ) , the lower lip ( 7 ) , and ...
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Palavras e frases frequentes
abdomen adductor muscle Advanced Text-Books animal antennæ appendages arms attached backbone beak bivalve blood body body-cavity bone breathing-organs breathing-tubes carries cavity chambers characters distinguish colour common common Frog common House Spider composed consists contained Crown 8vo Diagram Dictionary digestive distinct heart distinct vent distinguish the class domestic Goose dorsal fin Edition Engravings eyes Fcap feelers fins fluid Flustra foot-jaws Frog front Geology gills Goose Greek Grey Lag gullet head horny Hydra insect internal anatomy intestine jointed known Latin Leech limbs Lithobius Lithobius forficatus little nervous masses Lobster lower surface lungs mantle MANUAL means membranous mouth muscular Mya arenaria nervous system opens outer pairs of legs peculiar Perch PHYSICAL GEOGRAPHY plate portion processes quadrate bone RECAPITULATION OF ESSENTIAL rings or segments rudimentary Scolecida shell side skin skull soft spines Star-fish stomach sub-kingdom sucker tail teeth tentacles thorax tion tube valve Whelk Zoology
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