قراءة كتاب The Sea-beach at Ebb-tide A Guide to the Study of the Seaweeds and the Lower Animal Life Found Between Tide-marks

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The Sea-beach at Ebb-tide
A Guide to the Study of the Seaweeds and the Lower Animal Life Found Between Tide-marks

The Sea-beach at Ebb-tide A Guide to the Study of the Seaweeds and the Lower Animal Life Found Between Tide-marks

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دار النشر: Project Gutenberg
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href="@public@vhost@g@gutenberg@html@files@43946@[email protected]#V_distribution_of_animal_life_in_the_sea" class="pginternal" tag="{http://www.w3.org/1999/xhtml}a">Distribution of Animal Life in the Sea

23 VI Some Botanical Facts about Algæ 25 VII Naming of Plants 28 VIII Distribution of Algæ 30 IX Some Peculiar and Interesting Varieties of Algæ 32 X Uses of Algæ 37 XI Collecting at Bar Harbor 40 PART I Marine Algæ I Blue-Green Seaweeds (Cyanophyceæ) 47 Grass-Green Seaweeds (Chlorophyceæ) 47 II Olive-Green and Brown Seaweeds (Phæophyceæ) 61 III Red Seaweeds (Rhodophyceæ or Florideæ) 75 PART II Marine Invertebrates I Porifera (Sponges) 99 II Cœlenterata (Polyps) 111 III Worms (Platyhelminthes, Nemathelminthes, Annulata) 159 IV Molluscoida 187 V Echinodermata 199 VI Arthropoda 237 VII Mollusca 299 VIII Chordata 471 Index 479

INTRODUCTION

In vain through every changeful year

  Did nature lead him as before;

    A primrose by a river's brim,

    A yellow primrose was to him,

  And it was nothing more.

At noon, when by the forest's edge

  He lay beneath the branches high,

    The soft blue sky did never melt

    Into his heart; he never felt

  The witchery of the soft blue sky.

Wordsworth.

To him who in the love of Nature holds

Communion with her visible forms, she speaks

A various language.

Bryant.


INTRODUCTION

I
SIGNS ON THE BEACH

The sea-shore, with its stretches of sandy beach and rocks, seems, at first sight, nothing but a barren and uninteresting waste, merely the natural barrier of the ocean. But to the observant eye these apparently desolate reaches are not only teeming with life; they are also replete with suggestions of the past. They are the pages of a history full of fascination for one who has learned to read it.

In this history even the grains of

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