Books with author Lowell Percival 1855-1916

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This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

Eleven years have elapsed since the writer’s first work on Mars was published in which were recorded the facts gleaned in his research up to that time and in which was set forth a theory of their explanation. Continued work in the interval has confirmed the conclusions there stated; sometimes in quite unexpected ways. Five times during that period Mars has approached the earth within suitable scanning distance and been subjected to careful and prolonged scrutiny. Familiarity with the subject, improved telescopic means, and long-continued training have all combined to increased efficiency in the procuring of data and to results which have been proportionate. A mass of new material has thus been collected,—some of it along old lines, some of it in lines that are themselves new,—and both have led to the same outcome. In addition to thus pushing inquiry into advanced portions of the subject, study has been spent in investigation of the reality of the phenomena upon which so much is based, and in testing every theory which has been suggested to account for them. From diplopia to optical interference, each of these has been examined and found incompatible with the observations. The phenomena are all they have been stated to be, and more. Each step forward in observation has confirmed the genuineness of those that went before.

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

Unlike some other reproductions of classic texts (1) We have not used OCR(Optical Character Recognition), as this leads to bad quality books with introduced typos. (2) In books where there are images such as portraits, maps, sketches etc We have endeavoured to keep the quality of these images, so they represent accurately the original artefact. Although occasionally there may be certain imperfections with these old texts, we feel they deserve to be made available for future generations to enjoy.

Unlike some other reproductions of classic texts (1) We have not used OCR(Optical Character Recognition), as this leads to bad quality books with introduced typos. (2) In books where there are images such as portraits, maps, sketches etc We have endeavoured to keep the quality of these images, so they represent accurately the original artefact. Although occasionally there may be certain imperfections with these old texts, we feel they deserve to be made available for future generations to enjoy.

MARS AS THE ABODE OF LIFE FOREWORD UP to the middle of the nineteenth century, astronomy was busied with motions. The wanderings of the planets in their courses attracted attention, and held thought to the practical exclusion of all else concerning them. It was to problems of this character that the great names of the past - Newton, Huygens, Laplace - were linked. But when the century that has gone was halfway through its course, a change came over the spirit of the investigation; with the advance in physics celestial searchers began to concern themselves with matter, too. Gravitational astronomy had regarded the planets from the point of view of how they act; physical astronomy is intent upon what they are. One outcome of this more intimate acquaintance is the new study with which the present papers deal: the evolution of the planets regarded as worlds. Such research has to do not merely with the aggregation of material, but with its subsequent metamorphosesTable of Contents CONTENTS; Foreword; PAGE I; PART I; CHAPTER; I The Genesis of a World; Catastrophic origin Meteorites Meteorite worship; Meteoric constitution of solar system Analogy of cataclysm to new stars (Novae) The meteorites gravitate together, generating heat Amount of heat depends on the mass of the body Substances vary with heat and pressure Mass the fundamental factor Cooling Life-history depends on size Planetologic eras; Present aspects of the planets our guide Geologic part of planetology Landscape the result of cooling Mountains in proportion to mass Volcanic phenomena ; Relative roughness of Earth, Moon, and Mars Mountains absent on Mars Slant illumination Importance to astronomers Applied to Mars Not indicative of mountains Two or three thousand feet limit of elevation on Mars; xii; CONTENTS; CHAPTER PACE; Internal heat of the three bodies 23 Darwinian theory of lunar origin , , , ,26 Confirmed by lunar surface 26; Probable comparative

MarsPercival Lowell, american businessman, author, mathematician, and astronomer (1855-1916)This ebook presents «Mars», from Percival Lowell. A dynamic table of contents enables to jump directly to the chapter selected.Table of Contents-01- About this book-02- DEDICATION-03- PREFACE-04- GENERAL CHARACTERISTICS-05- ATMOSPHERE-06- WATER-07- CANALS-08- OASES-09- CONCLUSION-10- APPENDIX