Download The Nature of Natural History by Marston Bates PDF

By Marston Bates

This vintage paintings is an exploration of what ordinary heritage is, and a sustained attempt to determine the way it pertains to different parts of biology. Marston Bates didn't try to crush his viewers with proof or overinterpret these he did use, and, probably as a result, the character of usual heritage is a undying paintings. The author's actual curiosity within the tropics has a really present feeling, and the 1st ten or fifteen chapters of the paintings have a method that's parallel to that of David Attenborough's verbal displays of nature. From the e-book: "I have already made a number of comments concerning the connection among parasitism and degeneracy. i believe it is a topic of perspective. we're predatory animals ourselves, and for this reason respect the features of predationagility, velocity, crafty, self-reliance. We believe a definite kinship with the lion, and regard the liver fluke with horror. If a sheep got the alternative, although, it could actually wish to be debilitated via liver flukes instead of killed through a lion."

Originally released in 1990.

The Princeton Legacy Library makes use of the most recent print-on-demand expertise to back make to be had formerly out-of-print books from the celebrated backlist of Princeton collage Press. those paperback variations safeguard the unique texts of those very important books whereas offering them in sturdy paperback variations. The objective of the Princeton Legacy Library is to drastically raise entry to the wealthy scholarly historical past present in the hundreds of thousands of books released via Princeton college Press seeing that its founding in 1905.

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Extra info for The Nature of Natural History

Sample text

A great many are single-celled organisms, and some of them, because of their active movement and close similarity to the animal protozoa, are claimed by both the botanists and the zoologists. Some microscopic algae (diatoms and desmids) have beautiful symmetrical forms, like the patterns of snow crystals, and are favorite objects of the microscopists. In others the cells group together in various ways, first forming simple chains of cells, then forming more complex communities with different cells taking on different functions, until finally many algae form definite, obvi- 30 The Nature of Natural History ous plants, the seaweeds, including the largest plant of them all, the giant kelp of the Pacific ocean.

The coelenterates are definite, organized, multicellular animals. The individual cells are organized into tissues with distinctive functions, and one may recognize digestive, muscular, nervous, sensory and even skeletal systems, though respiratory, excretory and circulatory systems are lacking. Distinctive sex cells, with reproductive functions, are produced, but they do not form part of a reproductive system as in more complex animals. Coelenterates show radial symmetry, with all of the different parts disposed within the circular form centering on the mouth opening, instead of the bilateral symmetry of most animals.

Many have become parasitic and several important human diseases (malaria, African sleeping sickness, amoebic dysentery, for instance) are caused by animals of this group. The largest protozoa can barely be seen as tiny specks in water with the unaided eye. Most of them are large enough so that their structures can be easily studied with the compound microscope, though some are small enough to make such study difficult. They are almost all big, though, as compared with bacteria, and giants in comparison with the viruses.

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