02118cam a22003133u 450000100060000000300070000600500170001300600020003000700050003200800410003701000130007804000110009104100170010205000070011910000350012624500130016126400510017430000470022533600260027233700260029833800360032450000310036050800300039152012690042153400450169065300090173585600430174499900170178717712UtSlPG20260610133419.0mcr n260607r2006||||utu|||||o|||||||||||||| d  a01005387  aUtSlPG 7aen2iso639-1 4aQB1 aElger, Thomas Gwyn,d1836-189714aThe moon 1aSalt Lake City, UT :bProject Gutenberg,c2006  a1 online resource :bmultiple file formats  atextbtxt2rdacontent  acomputerbc2rdamedia  aonline resourcebcr2rdacarrier  aRelease date is 2006-02-07  aProduced by Steve Ridgway  a"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.)  nOriginal publication data not identified  aMoon40uhttps://www.gutenberg.org/ebooks/17712  c59098d59098