Project Gutenberg 2006-02-07 Public domain in the USA. 169 Elger, Thomas Gwyn 1836 1897 Elger, T. Gwyn (Thomas Gwyn) 01005387 The moon : $b a full description and map of its principal physical features Produced by Steve Ridgway "The Moon: A Full Description and Map of Its Principal Physical Features" by Thomas Gwyn Elger is a scientific publication written in the late 19th century. The work serves as an extensive guide for lunar observers, illustrating the moon's physical characteristics and providing detailed maps for reference. The book is tailored for both serious astronomers and those with a general interest in astronomy, aiming to enhance understanding of the moon's surface features. The opening portion of the book sets the stage for an in-depth exploration of lunar topography, emphasizing the work's dual purpose as a reference for telescopic observation and a means of organizing lunar research. Elger discusses the advancements in lunar observation since Galileo's time, acknowledging the contributions of various astronomers who have mapped and named lunar features. He introduces the various categories of lunar formations, such as maria (seas), ridges, craters, and rills (clefts), while highlighting the significance of those observations in the study of selenography. The preface articulates the need for systematic observation techniques, presenting a foundation upon which the subsequent chapters build deeper insights. (This is an automatically generated summary.) Reading ease score: 64.9 (8th & 9th grade). Neither easy nor difficult to read. en Moon QB Text Category: Science - Earth/Agricultural/Farming Category: Encyclopedias/Dictionaries/Reference 462441 2025-07-07T12:30:25.185065 text/html 462262 2025-01-17T15:27:05.704463 text/html 219036 2025-07-07T12:30:31.766537 application/epub+zip 226215 2025-07-07T12:30:27.540130 application/epub+zip 209145 2025-07-07T12:30:26.476064 application/epub+zip 379338 2025-07-07T12:30:35.025517 application/x-mobipocket-ebook 358592 2025-07-07T12:30:31.138540 application/x-mobipocket-ebook 338955 2022-09-08T12:36:45.049409 application/x-mobipocket-ebook 434353 2025-07-07T12:30:24.829053 text/plain; charset=us-ascii 434267 2006-02-07T15:10:22 text/plain; charset=us-ascii 17826 2025-07-07T12:30:35.153516 application/rdf+xml 9077 2025-07-07T12:30:26.972061 image/jpeg 2299 2025-07-07T12:30:26.722121 image/jpeg 139994 2006-02-07T15:10:22 application/octet-stream application/zip 215822 2025-07-07T12:30:25.215067 application/octet-stream application/zip Archives containing the RDF files for *all* our books can be downloaded at https://book.klll.cc/wiki/Gutenberg:Feeds#The_Complete_Project_Gutenberg_Catalog en.wikipedia