Animal life: a first book of zoölogy

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D. Appleton and company, 1900 - 329 páginas

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Página 115 - There is no exception to the rule that every organic being naturally increases at so high a rate, that, if not destroyed, the earth would soon be covered by the progeny of a single pair. Even slow-breeding man has doubled in twenty-five years, and at this rate, in less than a thousand years, there would literally not be standing room for his progeny.
Página 335 - TREES AND THEIR LEAVES. By F. SCHUYLER MATHEWS, author of "Familiar Flowers of Field and Garden," " The Beautiful Flower Garden,
Página 88 - Fig. 145 are indistinguishably alike, but one embryo is sure to develop into a fish and the other into a salamander. This certainty of an embryo to become an individual of a certain kind is called the law of heredity.
Página 215 - He cannot be mistaken for any other, and his flaming vest and blue stockings show that he does not court concealment. He is very abundant in the damp woods, and I was convinced he was uneatable so soon as I made his acquaintance and saw the happy sense of security with which he hopped about. I took a few specimens home with me, and tried my fowls and ducks with them ; but none would touch them. At last, by throwing down pieces of meat, for which there was a great competition amongst them, I managed...
Página 335 - A book of much value and interest, admirably arranged for the student and the lover of flowers. . . . The text is full of compact information, well selected and interestingly presented. ... It seems to us to be a most attractive handbook of its kind.
Página 334 - TEACHERS' MANUAL. To accompany Portfolios of Colored Plates of Bird-Life. Contains the same text as the Teachers' Edition of ** Bird-Life, " but is without the 75 uncolored plates. Sold only with the Portfolios, as follows : Portfolio No. I. — Permanent Residents and Winter Visitants. 32 plates. Portfolio No. II. — March and April Migrants. 34 plates. Portfolio No. III. — May Migrants, Types of Birds' Eggs, Types of Birds' Nests from Photographs from Nature, 34.
Página 164 - Russian naturalist, of the hunting habits of the great white-tailed eagle (Haliattos albicilla) on the Russian steppes shows that this kind of eagle at least has adopted a gregarious habit, in which mutual help is plainly obvious. This naturalist once saw an eagle high in the air, circling slowly and widely in perfect silence. Suddenly the eagle screamed loudly. " Its cry was soon answered by another eagle, which approached it, and was followed by a third, a fourth, and so on, till nine or ten eagles...
Página 333 - ... second, that he should be able to determine the relative importance of the subjects to be treated in a text-book ; third, that he should know how to present properly his topics to the ordinary student. The general editorial supervision of the series is in the hands of Dr. AF Nightingale...
Página 334 - ... unique interest and value. It contains fascinating accounts of the habits of some of our common birds and descriptions of the largest bird colonies existing in eastern North America ; while its author's phenomenal success in photographing birds in Nature not only lends to the illustrations the charm of realism, but makes the book a record of surprising achievements with the camera.
Página 332 - ... requirements, and other questions of like character. In order to meet the new demands of the country along these higher planes of educational work, the Twentieth Century Text-Books have been prepared. At every step in the planning of the series care has been taken to secure the best educational advice, in order that the books may really meet the increasing demand from academies, high schools, and colleges for text-books that shall be pedagogically suitable for teachers and pupils, sound in modern...

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