Outlines of natural history for beginners |
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Página 10
... placed near the mouth . The most important internal organs , and indeed almost the only ones , are one or two little chambers ( fig . 2 , A , v v ) , which open and shut at regular intervals , perhaps five or six times in a minute , and ...
... placed near the mouth . The most important internal organs , and indeed almost the only ones , are one or two little chambers ( fig . 2 , A , v v ) , which open and shut at regular intervals , perhaps five or six times in a minute , and ...
Página 12
... when it chooses . At the opposite end of the body is placed the opening of the mouth , surrounded by from seven to twelve flexible and extensible processes , which are termd the " tenta- 12 OUTLINES OF NATURAL HISTORY .
... when it chooses . At the opposite end of the body is placed the opening of the mouth , surrounded by from seven to twelve flexible and extensible processes , which are termd the " tenta- 12 OUTLINES OF NATURAL HISTORY .
Página 16
... placed the mouth , in the centre of a rounded , smooth space , which is surrounded by a fringe of numerous hollow processes or " tentacles . " Both the body and tentacles are formed out of two membranes , an outer and an inner ( shown ...
... placed the mouth , in the centre of a rounded , smooth space , which is surrounded by a fringe of numerous hollow processes or " tentacles . " Both the body and tentacles are formed out of two membranes , an outer and an inner ( shown ...
Página 18
... surface of the body is placed the opening of the mouth , surrounded by a fringe. Fig . 6. - The Common Star - fish ( Uraster rubens ) , natural size , viewed Fig . 8. - Rotifera . Eosphora aurita , one. 18 OUTLINES OF NATURAL HISTORY . ...
... surface of the body is placed the opening of the mouth , surrounded by a fringe. Fig . 6. - The Common Star - fish ( Uraster rubens ) , natural size , viewed Fig . 8. - Rotifera . Eosphora aurita , one. 18 OUTLINES OF NATURAL HISTORY . ...
Página 20
... placed at the angle where two of the arms unite . The mouth of the Star - fish is not provided with teeth , and opens into a very thin and membranous stomach , which can be thrust forth or " pouted out " through the mouth . From the ...
... placed at the angle where two of the arms unite . The mouth of the Star - fish is not provided with teeth , and opens into a very thin and membranous stomach , which can be thrust forth or " pouted out " through the mouth . From the ...
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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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