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abdomen acid agates alcohol Algol ameloblasts animal antennae aphides appear argon balsam become body bristles Canada balsam Capsida cavity cells cent central centre chalcedony colour contains cover-glass crystalloids described diameter Diatoms eggs elytra enamel enamel cells enamel rods endodermis examined eye-piece eyes fermentation fibres Fieb flowers formalin genera genus give glass hairs Hemiptera illustrations imago inch insects interesting Journal of Microscopy labium lanarius larva layer leaves legs London membrane method micrometer microscope Microscopy and Natural minute mites mounted nearly Nesaa nitrogen nucleoli nucleus nymph object observed organ Orthoptera pair parasitic Pasteur plant plate posterior present Price produced Prof pronotum protoplasm root rostrum round says Science sections seen shell side silica slides Society solution species specimens spectroscope spines stage stained stamens stars stratum intermedium structure surface thorax tion tissue tube various wings
Page 216 - I felt lu as a botanist, and felt myself rewarded : a gigantic leaf from five to six feet in diameter, salver-shaped, with a broad rim ; of a light green above, and a vivid crimson below, resting upon the water. Quite in character with the wonderful leaf was the luxuriant flower, consisting of many hundred petals, passing in alternate tints from pure white to rose and pink. The smooth water was covered with the blossoms, and as I rowed from one to the other I always observed something new to admire.
Page 103 - HALF-HOURS WITH THE STARS: a Plain and Easy Guide to the Knowledge of the Constellations. Showing in 12 Maps the position of the principal Star-Groups night after night throughout the year. With Introduction and a separate Explanation of each Map. True for every Year.
Page 8 - A new variety raised by man will be a more important and interesting subject for study than one more species added to the infinitude of already recorded species. Our classifications will come to be, as far as they can be so made, genealogies; and will then truly give what may be called the plan of creation. The rules for classifying will no doubt become simpler when we have a definite object in view.
Page 216 - It was on the ist of January this year (1837), while contending with the difficulties Nature imposed in different forms to our progress up the river Berbice (in Brit. Guiana), that we arrived at a point where the river expanded and formed a currentless basin. Some object on the southern extremity of this basin attracted my attention.
Page 178 - INSECTS form by far the larger part of the land animals of the world ; they outnumber in species all the other terrestrial animals together, while compared with the Vertebrates their numbers are simply enormous.
Page 34 - When an animal is hatched from the egg in an immature form, the external forces acting upon it are different from those which affect the mature form, and thus changes are produced in the young, bearing reference to its present wants rather than to its ultimate form. 7. When the external organs arrive at this final form before the organs of reproduction are matured, these changes are known as metamorphoses ; when, on the contrary, the organs of reproduction are functionally perfect before...
Page 8 - ... conviction that the thing can be done. I have said that no modern naturalist would define a species in such terms that some horticultural types could be excluded, even if he desired that they should be omitted. Haeckel's excellent definition admits many of them. In his view, the word species " serves as the common designation of all individual animals or plants, which are equal in all essential matters of form, and are only distinguished by quite subordinate characters.
Page 177 - ... though related to those animals most repulsive to the aesthetic sense of man, animals which crawl upon their bellies and spit at, or poison, their prey — is yet, strange to say, an animal of striking beauty. The exquisite sensitiveness and constantly changing form of the antennae, the well-rounded plump body, the eyes set like small diamonds on the side of the head, the delicate feet, and, above all, the rich colouring and velvety texture of the skin, all combine to give these animals an aspect...
Page 11 - In other cases, it appears to have arisen without intermediate forms, as a distinct offshoot from an older type. This is well illustrated in many remarkably distinct garden forms, which originated all at once with characters new to the species or even to the genus. I have mentioned such a case in the Upright tomato. Even the sudden appearance of these strange forms is proof that species may originate at any time and that it can be no part of our fundamental conception of a species that it shall have...
Page 179 - The largest Insects scarcely exceed in bulk a mouse or a wren, while the smallest are almost or quite imperceptible to the naked eye, and yet the larger part of the animal matter existing on the lands of the globe is in all probability locked up in the forms of Insects. Taken as a whole they are the most successful of all the forms of terrestrial animals.\ In the waters of the globe the predominance of Insect life disappears.