Tycho. 80. This magnificent crater is 54 miles in diameter and upwards of 16,000 feet deep from the highest ridge of the rampart to the surface of the plateau. It is one of the most conspicuous of lunar craters, not so much on account of its dimensions as from its occupying the great focus of disruption from whence diverge those remarkable bright streaks many of which may be traced over 1000 miles of the moon's surface. The interior of the crater presents striking examples of the concentric, terrace-like formations that are regarded as formed by landslips.
Wargentin. 26. Schickard. 28. Wargentin is an object quite unique of its kind—a crater about 52 miles across, that to all appearance has been filled to the brim with lava that has been left to consolidate. There are evidences of the remains of a rampart, especially on the southwest portion of the rim. The general aspect of Wargentin has been compared to that of a "thin cheese." The terraced and rutted exterior of the rampart has all the details of a true crater. The surface of the high plateau is marked by a few ridges branching from a point nearly in the center.
Schickard is one of the finest examples of a walled plain. It is 153 miles in diameter. Within its rampart are 16 smaller craters and without, numberless others.
The following are the names of topographic features of the Moon which can be located by the corresponding numbers on the accompanying chart.
| 1. | Newton. | | 2. | Short. | | 3. | Simpelius. | | 4. | Manzinus. | | 5. | Moretus. | | 6. | Gruemberger. | | 7. | Casatus. | | 8. | Klaproth. | | 9. | Wilson. | | 10. | Kircher. | | 11. | Bettinus. | | 12. | Blancanus. | | 13. | Clavius. | | 14. | Scheiner. | | 15. | Zuchius. | | 16. | Segner. | | 17. | Bacon. | | 18. | Nearchus. | | 19. | Vlacq. | | 20. | Hommel. | | 21. | Licetus. | | 22. | Maginus. | | 23. | Longomontanus. | | 24. | Schiller. | | 25. | Phocylides. | | 26. | Wargentin. | | 27. | Inghirami. | | 28. | Schickard. | | 29. | Wilhelm I. | | 30. | Tycho. | | 31. | Saussure. | | 32. | Stoefler. | | 33. | Maurolycus. | | 34. | Barocius. | | 35. | Fabricius. | | 36. | Metius. | | 37. | Fernelius. | | 38. | Heinsius. | | 39. | Hainzel. | | 40. | Bouvard. | | 41. | Piazzi. | | 42. | Ramsden. | | 43. | Capuanus. | | 44. | Cichus. | | 45. | Wurzelbauer. | | 46. | Gauricus. | | 47. | Hell. | | 48. | Walter. | | 49. | Nonius. | | 50. | Riccius. | | 51. | Rheita. | | 52. | Furnerius. | | 53. | Stevinus. | | 54. | Hase. | | 55. | Snell. | | 56. | Borda. | | 57. | Neander. | | 58. | Piccolomini. | | | | 117. | Lalande. | | 118. | Reaumur. | | 120. | Letronne. | | 121. | Billy. | | 122. | Fontana. | | 123. | Hansteen. | | 124. | Damoiseau. | | 125. | Grimaldi. | | 126. | Flamsteed. | | 127. | Landsberg. | | 128. | Moesting. | | 129. | Deambrel. | | 130. | Taylor. | | 131. | Messier. | | 132. | Maskelyne. | | 133. | Sabine. | | 134. | Ritter. | | 135. | Godin. | | 136. | Soemmering. | | 137. | Schroeter. | | 138. | Gambart. | | 139. | Reinhold. | | 140. | Encke. | | 141. | Hevelius. | | 142. | Riccioli. | | 143. | Lohrman. | | 144. | Cavalerius. | | 145. | Reiner. | | 146. | Kepler. | | 147. | Copernicus. | | 148. | Stadius. | | 149. | Pallas. | | 150. | Triesnecker. | | 151. | Agrippa. | | 152. | Arago. | | 153. | Taruntius. | | 154. | Apollonius. | | 155. | Schubert. | | 156. | Firmicus. | | 157. | Silberschlag. | | 158. | Hyginus. | | 159. | Ukert. | | 160. | Boscovich. | | 161. | Ross. | | 162. | Proclus. | | 163. | Picard. | | 164. | Condorcet. | | 165. | Pliny or Menelaus. | | 167. | Manilius. | | 168. | Erastothenes. | | 169. | Gay Lussac. | | 170. | Tobias Mayer. | | 171. | Marius. | | 172. | Olbers. | | 173. | Vasco de Gama. |
| | 59. | Pontanus. | | 60. | Poisson. | | 61. | Aliacensis. | | 62. | Werner. | | 63. | Pitatus. | | 64. | Hesiodus. | | 65. | Mercator. | | 66. | Vitello. | | 67. | Fourier. | | 68. | Lagrange. | | 69. | Vieta. | | 70. | Doppelmayer. | | 71. | Campanus. | | 72. | Kies. | | 73. | Purbach. | | 74. | La Caille. | | 75. | Playfair. | | 76. | Azophi. | | 77. | Sacrobosco. | | 78. | Fracastorius. | | 79. | Santbech. | | 80. | Petavius. | | 81. | Wilhelm Humboldt. | | 82. | Polybius. | | 83. | Geber. | | 84. | Arzachael. | | 85. | Thebit. | | 86. | Bullialdus. | | 87. | Hippalus. | | 88. | Cavendish. | | 89. | Mersenius. | | 90. | Gassendi. | | 91. | Lubiniezky. | | 92. | Alpetragius. | | 93. | Airy. | | 94. | Almanon. | | 95. | Catharina. | | 96. | Cyrillus. | | 97. | Theophilus. | | 98. | Colombo. | | 99. | Vendelinus. | | 100. | Langreen. | | 101. | Goclenius. | | 102. | Guttemberg. | | 103. | Isidorus. | | 104. | Capella. | | 105. | Kant. | | 106. | Descartes. | | 107. | Abulfeda. | | 108. | Parrot. | | 109. | Albategnius. | | 110. | Alphons. | | 111. | Ptolemy. | | 112. | Herschel. | | 113. | Davy. | | 114. | Guerike. | | 116. | Bonpland. | | | | 174. | Seleucus. | | 175. | Herodotus. | | 176. | Aristarchus. | | 177. | La Hire. | | 178. | Pytheas. | | 179. | Bessel. | | 180. | Vitruvius. | | 181. | Maraldi. | | 182. | Macrobius. | | 183. | Cleomides. | | 184. | Roemer. | | 185. | Littrow. | | 186. | Posidonius. | | 187. | Geminus. | | 188. | Linnaeus. | | 189. | Autolycus. | | 190. | Aristillus. | | 191. | Archimedes. | | 192. | Timocharis. | | 193. | Lambert. | | 194. | Diophantus. | | 195. | Delisle. | | 196. | Briggs. | | 197. | Lichtenberg. | | 199. | Calippus. | | 200. | Cassini. | | 201. | Gauss. | | 202. | Messala. | | 203. | Struve. | | 204. | Mason. | | 205. | Plana. | | 206. | Burg. | | 207. | Baily. | | 208. | Eudoxus. | | 209. | Aristotle. | | 210. | Plato. | | 211. | Pico. | | 212. | Helicon. | | 213. | Maupertuis. | | 214. | Condamine. | | 215. | Bianchini. | | 216. | Sharp. | | 217. | Mairan. | | 218. | Gerard. | | 219. | Repsold. | | 220. | Pythagoras. | | 221. | Fontenelle. | | 222. | Timaeus. | | 223. | Epigenes. | | 224. | Gartner. | | 225. | Thales. | | 226. | Strabo. | | 227. | Endymion. | | 228. | Atlas. | | 229. | Hercules. |
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Oliver C. Farrington.
SOURCES OF ADDITIONAL INFORMATION ABOUT THE MOON
A number of textbooks and popular works on astronomy deal more or less fully with the Moon. Among them the following may be mentioned.
Moulton, Forest Ray—Introduction to Astronomy. Macmillan & Co., New York. 1916. 577 pp.
Young, Charles A.—A Textbook of General Astronomy. Ginn & Co., Boston. 1898. 630 pp.