Outlines of natural history for beginners |
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Página 36
... horny plate which covers the chest in front . A f Do 80 D m Fig . 15. - A , The male of the common House Spider ( Tegenaria civilis ) , con- siderably magnified ; c Front portion of the body , consisting of the amal- gamated head and ...
... horny plate which covers the chest in front . A f Do 80 D m Fig . 15. - A , The male of the common House Spider ( Tegenaria civilis ) , con- siderably magnified ; c Front portion of the body , consisting of the amal- gamated head and ...
Página 42
... horny matter , so that each ring or segment forms a more or less resistant tube , within which the internal organs are protected . 66 Commencing with the head ( fig . 17 , A , h ) , no distinct rings can , as already remarked , be ...
... horny matter , so that each ring or segment forms a more or less resistant tube , within which the internal organs are protected . 66 Commencing with the head ( fig . 17 , A , h ) , no distinct rings can , as already remarked , be ...
Página 45
... horny fibre , which is coiled up in the interior in the form of a close spiral . When young , the Dragon - fly is very different to the grown - up insect , and it passes through certain changes , before it assumes its final characters ...
... horny fibre , which is coiled up in the interior in the form of a close spiral . When young , the Dragon - fly is very different to the grown - up insect , and it passes through certain changes , before it assumes its final characters ...
Página 47
... branches . Its consistence is horny , and its surface rough ; and when it is examined with a magnify- ing glass , it is at once seen to be composed of an en- A ormous number of little chambers or " cells , " CLASS POLYZOA . 47.
... branches . Its consistence is horny , and its surface rough ; and when it is examined with a magnify- ing glass , it is at once seen to be composed of an en- A ormous number of little chambers or " cells , " CLASS POLYZOA . 47.
Página 48
... horny a b Fig . 19. - Flustra foliacea , one of the Sea - mats . a The plant - like colony , natural size ; b A fragment of the colony magnified , showing the little chambers or cells , in which the separate animals forming the colony ...
... horny a b Fig . 19. - Flustra foliacea , one of the Sea - mats . a The plant - like colony , natural size ; b A fragment of the colony magnified , showing the little chambers or cells , in which the separate animals forming the colony ...
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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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