How Long to Read The Evolution of Man - Volume 2

How Long Does it Take to Read The Evolution of Man - Volume 2?

It takes the average reader 2 hours and 26 minutes to read The Evolution of Man - Volume 2 by Ernst Heinrich Philipp August Haeckel

Assuming a reading speed of 250 words per minute. Learn more

Description

The Evolution of Man - Volume 2 by Ernst Heinrich Philipp August Haeckel In turning from the embryology to the phylogeny of man-from the development of the individual to that of the species-we must bear in mind the direct causal connection that exists between these two main branches of the science of human evolution. This important causal nexus finds its simplest expression in "the fundamental law of organic development," the content and purport of which we have fully considered in the first chapter. According to this biogenetic law, ontogeny is a brief and condensed recapitulation of phylogeny. If this compendious reproduction were complete in all cases, it would be very easy to construct the whole story of evolution on an embryonic basis. When we wanted to know the ancestors of any higher organism, and, therefore, of man-to know from what forms the race as a whole has been evolved we should merely have to follow the series of forms in the development of the individual from the ovum; we could then regard each of the successive forms as the representative of an extinct ancestral form. However, this direct application of ontogenetic facts to phylogenetic ideas is possible, without limitations, only in a very small section of the animal kingdom. There are, it is true, still a number of lower invertebrates (for instance, some of the Zoophyta and Vermalia) in which we are justified in recognising at once each embryonic form as the historical reproduction, or silhouette, as it were, of an extinct ancestor. But in the great majority of the animals, and in the case of man, this is impossible, because the embryonic forms themselves have been modified through the change of the conditions of existence, and have lost their original character to some extent. During the immeasurable course of organic history, the many millions of years during which life was developing on our planet, secondary changes of the embryonic forms have taken place in most animals. The young of animals (not only detached larvae, but also the embryos enclosed in the womb) may be modified by the influence of the environment, just as well as the mature organisms are by adaptation to the conditions of life; even species are altered during the embryonic development. Moreover, it is an advantage for all higher organisms (and the advantage is greater the more advanced they are) to curtail and simplify the original course of development, and thus to obliterate the traces of their ancestors. The higher the individual organism is in the animal kingdom, the less completely does it reproduce in its embryonic development the series of its ancestors, for reasons that are as yet only partly known to us. The fact is easily proved by comparing the different developments of higher and lower animals in any single stem. We are delighted to publish this classic book as part of our extensive Classic Library collection. Many of the books in our collection have been out of print for decades, and therefore have not been accessible to the general public. The aim of our publishing program is to facilitate rapid access to this vast reservoir of literature, and our view is that this is a significant literary work, which deserves to be brought back into print after many decades. The contents of the vast majority of titles in the Classic Library have been scanned from the original works. To ensure a high quality product, each title has been meticulously hand curated by our staff. Our philosophy has been guided by a desire to provide the reader with a book that is as close as possible to ownership of the original work. We hope that you will enjoy this wonderful classic work, and that for you it becomes an enriching experience.

How long is The Evolution of Man - Volume 2?

The Evolution of Man - Volume 2 by Ernst Heinrich Philipp August Haeckel is 144 pages long, and a total of 36,576 words.

This makes it 49% the length of the average book. It also has 45% more words than the average book.

How Long Does it Take to Read The Evolution of Man - Volume 2 Aloud?

The average oral reading speed is 183 words per minute. This means it takes 3 hours and 19 minutes to read The Evolution of Man - Volume 2 aloud.

What Reading Level is The Evolution of Man - Volume 2?

The Evolution of Man - Volume 2 is suitable for students ages 10 and up.

Note that there may be other factors that effect this rating besides length that are not factored in on this page. This may include things like complex language or sensitive topics not suitable for students of certain ages.

When deciding what to show young students always use your best judgement and consult a professional.

Where Can I Buy The Evolution of Man - Volume 2?

The Evolution of Man - Volume 2 by Ernst Heinrich Philipp August Haeckel is sold by several retailers and bookshops. However, Read Time works with Amazon to provide an easier way to purchase books.

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