Bøger af Thomas Belt

This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book. ++++ The below data was compiled from various identification fields in the bibliographic record of this title. This data is provided as an additional tool in helping to ensure edition identification: ++++ Mineral Veins: An Enquiry Into Their Origin, Founded On A Study Of The Auriferous Quartz Veins Of Australia Thomas Belt J. Weale, 1861 Science; Earth Sciences; Geology; Geology; Gold industry; Mines and mineral resources; Ore deposits; Science / Earth Sciences / Geology; Technology & Engineering / Mining

Mineral Veins: An Enquiry Into Their Own Origin is a scientific book written by Thomas Belt in 1861. The book explores the formation and origin of mineral veins, which are deposits of minerals that occur in cracks or fissures in rocks. Belt's work is based on his extensive observations of mineral veins in various locations, including England, Scotland, and Australia. The book is divided into two parts. The first part provides a detailed overview of the characteristics of mineral veins, including their geological setting, composition, and structure. Belt also discusses the different types of mineral veins, such as fissure veins, contact veins, and bedded veins. In the second part of the book, Belt delves deeper into the theories of mineral vein formation. He explores the different hypotheses that have been proposed by geologists over the years, including the theories of igneous and aqueous origin. Belt also presents his own ideas on the subject, drawing on his observations and experiments. Throughout the book, Belt uses clear and concise language to explain complex geological concepts. He also includes numerous illustrations and diagrams to aid in the understanding of the material. Overall, Mineral Veins: An Enquiry Into Their Own Origin is a valuable resource for geologists, mineralogists, and anyone interested in the science of mineral veins. Belt's meticulous observations and thorough analysis make this book a classic in the field of geology.This scarce antiquarian book is a facsimile reprint of the old original and may contain some imperfections such as library marks and notations. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions, that are true to their original work.

But--and here comes in the principle to which the term "mimicry" is now restricted--if warning colours are helpful to noxious animals, then defenceless animals acquiring these colours will share in the protection afforded by them. And so we find a deceptive similarity between animals occurring in the same district, but not closely related, in which the mimicked form is unpalatable or has an odour repulsive to birds and lizards. It must, of course, be understood that the mimicry is unconscious, the result, as in the cases of cryptic resemblance, having been brought about by natural selection--the less perfect the mimicry the more liable are the individuals to be attacked, and the less chance have they of reproducing their kind.

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Sometimes.we would fall in with a troop of the white-faced cebus monkey, rapidly running away, throwing themselves from tree to tree. This monkey feeds also partly on fruit, but is incessantly on the look-out for insects, examining the crevices in trees and withered leaves, seizing the largest beetles and munching them up with great relish. -from Chapter VIII This masterpiece of scientific reportage and travel storytelling, first published in 1874, is a captivating narrative of the journeys of mining engineer Thomas Belt through the tropical rivers, valleys, forests, and lakes of Nicaragua. Replete with vivid descriptions of the animals and plants he encountered and full of ruminations on the geology of the region that were dismissed as fanciful at the time but have since been vindicated as true, this is "the best of all natural history journals which have ever been published," according to no less an authority than Charles Darwin.English engineer THOMAS BELT (1832-1878) traveled the world working mines from Australia to Colorado and producing numerous papers on topics ranging from geology to paleontology. The Naturalist in Nicaragua is considered his greatest work.

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This scarce antiquarian book is a facsimile reprint of the original. Due to its age, it may contain imperfections such as marks, notations, marginalia and flawed pages. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions that are true to the original work.