Methods of Study in Natural History |
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Page iii
... Classification , " since I have endeavored to present here in a more pop- ular form the views first expressed in that work . And although the direct intention of these pages has been , às their title indicates , to give some general ...
... Classification , " since I have endeavored to present here in a more pop- ular form the views first expressed in that work . And although the direct intention of these pages has been , às their title indicates , to give some general ...
Page vii
... CLASSIFICATION 15 CHAPTER III . CATEGORIES OF CLASSIFICATION 80 CHAPTER IV . CLASSIFICATION AND CREATION 41 CHAPTER V. DIFFERENT VIEWS RESPECTING ORDERS . 72 CHAPTER VI . GRADATION AMONG ANIMALS · • 84 CHAPTER VII . ANALOGOUS TYPES 108 ...
... CLASSIFICATION 15 CHAPTER III . CATEGORIES OF CLASSIFICATION 80 CHAPTER IV . CLASSIFICATION AND CREATION 41 CHAPTER V. DIFFERENT VIEWS RESPECTING ORDERS . 72 CHAPTER VI . GRADATION AMONG ANIMALS · • 84 CHAPTER VII . ANALOGOUS TYPES 108 ...
Page viii
... 175 HOMOLOGIES CHAPTER XIII . 201 CHAPTER XIV . ALTERNATE GENERATIONS 288 CHAPTER XV . THE OVARIAN EGG · 269 CHAPTER XVI . EMBRYOLOGY AND CLASSIFICATION . 296 METHODS OF STUDY IN NATURAL HISTORY . CHAPTER I. GENERAL viii CONTENTS .
... 175 HOMOLOGIES CHAPTER XIII . 201 CHAPTER XIV . ALTERNATE GENERATIONS 288 CHAPTER XV . THE OVARIAN EGG · 269 CHAPTER XVI . EMBRYOLOGY AND CLASSIFICATION . 296 METHODS OF STUDY IN NATURAL HISTORY . CHAPTER I. GENERAL viii CONTENTS .
Page 3
... classification or framework to express the divis- ions of the animal kingdom into larger or lesser groups . His only divisions are genera and spe- cies classes , orders , and families , as we under- stand them now , are quite foreign to ...
... classification or framework to express the divis- ions of the animal kingdom into larger or lesser groups . His only divisions are genera and spe- cies classes , orders , and families , as we under- stand them now , are quite foreign to ...
Page 5
... classification should have expressed all that was known , in the last century , of the most general relations among animals , only shows how difficult it is to generalize on such a sub- ject ; nor should we expect to find it an easy ...
... classification should have expressed all that was known , in the last century , of the most general relations among animals , only shows how difficult it is to generalize on such a sub- ject ; nor should we expect to find it an easy ...
Common terms and phrases
ab-oral region Acalephs adult Animal Kingdom Aristotle Articulates Astræans Baer belong bilateral symmetry Birds Blue and gold body branch Bryozoa buds Cabinet Edition called cavity cells centre character classification compared Complete complication of structure condition connected Coral Reefs corresponding Crinoids Crustacea Ctenophora Cuvier disk distinct divided divisions Echino Echinoderms Embryology ence existence facts Families Fishes Genera Genus geological geological period germ gills gradation groups growth Holothurians Hydroid Illustrated individual inner sac Insects instance investigation Jelly-Fish kind Linnæus living lower lowest mals Mammalia mesoblast mode Mollusks mouth natural naturalists Ophiuran organs peculiar period phases Poems Poetical Polyps present relation representatives Reptiles resemblance scientific Sea-Urchin shell side Silurian Small 4to Species stage Star-Fish Steel Portrait stem Strobila succession surface tentacles tion transverse true tubes ture Twice-Told Tales Vertebrates whole Winged Insect Worms yolk young zones
Popular passages
Page 20 - THE GLACIERS OF THE ALPS : being a Narrative of Excursions and Ascents. An Account of the Origin and Phenomena of Glaciers, and an Exposition of the Physical Principles to which they are related.
Page 23 - I have devoted my whole life to the study of Nature," Louis Agassiz said in summing up the result of his life's work, "and yet a single sentence may express all that I have done. I have shown that there is a correspondence between the succession of Fishes in geological times and the different stages of their growth in the egg, — this is all.
Page 20 - Dictionary of the Noted Names of Fiction ; including also Familiar Pseudonyms, Surnames bestowed on Eminent Men, and Analogous Popular Appellations often referred to in Literature and Conversation.
Page 123 - Does not every member of the crow family caw, whether it be the jackdaw, the jay, or the magpie, the rook in some green rookery of the Old World, or the crow of our woods, with its long, melancholy caw that seems to make the silence and solitude deeper ? Compare all the sweet warblers of the songster family — the nightingales, the thrushes, the mockingbirds, the robins; they differ in the greater or less perfection of their note, but the same kind of voice runs through the whole group. These affinities...
Page 42 - when scientific truth must cease to be the property of the few, when it must be woven into the common life of the world...
Page v - Paleontology, the former showing us norms of development as distinct and persistent for each group as are the fossil types of each period revealed to us by the latter; and that the experiments upon domesticated animals and cultivated plants, on which its adherents base their views, are entirely foreign to the matter in hand, since the varieties thus brought about by the fostering care of man are of an entirely different character from those observed among wild species. And while their positive evidence...
Page 14 - A History of the Administration of the Department of the Gulf in the year 1862. With an Account of the Capture of New Orleans, and a Sketch of the Previous Career of the General, Civil and Military.
Page 166 - But these also have their bounds within the sea: they in their turn reach the limit beyond which they are forbidden by the laws of their nature to pass, and there they also pause. But the Coral wall continues its steady progress ; for here the lighter kinds set in, — the Madrepores (p. 167), the Millepores, and a great variety of Sea-Fans (p. 167, below) and Corallines, and the reef is crowned at last with a many-colored shrubbery of low feathery growth.
Page 122 - ... cat as its stately and majestic form does to the smaller, softer, more peaceful aspect of the cat. Yet notwithstanding the difference in their size, who can look at the lion, whether in his more sleepy mood, as he lies curled up in the corner of his cage, or in his fiercer moments of hunger or of rage, without being reminded of a cat ? And this is not merely the resemblance of one carnivorous animal to another; for no one was ever reminded of a dog or wolf by a lion. Again, all the horses and...