ASTRONOMY WITH AN OPERA-GLASS. 



NORTH 



481 



A. The Crisian Sea. 



B. Humboldt Sea. 



C. The Sea of Cold. 



D. The Lake of Death. 



E. The Lake of Dreams. 



F. The Marsh of Sleep. 



O. The Sea of Tranquillity. 

 H. The Sea of Serenity. 



1. Grimaldi. 



2. Letronne. 



3. Gassendi. 



4. Euclides. 



5. Bullialdus. 



6. Pitatus. 



7. Schickhard. 



8. Longomontanus. 



9. Tyeho. 



10. Maginus 



11. Clavius. 



12. Ne\vt>n. 



13. Maurolycus. 



14. Stofler. 



SOUTH 



Fig. 1. Map of the Moon. 



Seas, Gulfs, and Marshes. 



I. The Marsh of Mists. 

 K. The Marsh of Putrefaction. 



L. The Sea of Vapors. 

 M. The Central Gulf. 

 N. The Gulf of Heats. 

 O. The Sea of Showers. 

 P. The Bay of Rainbows 

 Q. The Ocean of Storms. 



Mountains and Crater Rings. 



R. The Bay of Dew. 

 S. The Sea of Ciouds. 

 T. The Sea of Humors. 

 V. The Sea of Nectar. 

 X. The Sea of Fertility. 

 Z. The South Sea. 



15. Walter. 



16. Regiornontanus. 



17. Purbach. 



18. Arzachel. 



19. Alphonsus. 



20. Ptolemaus. 



21. Hipparchus. 



22. Albategnius. 



23. Theophilus. 



24. Cyrillus. 



25. Catharina. 



26. The Altai Mountains. 



27. Piccolomini. 



28. Petavius. 



29. Langrenus. 



30. Proclus. 



31. Cleomedes. 



32. Atlas. 



33. Hercules. 



34. Posidonius. 



35. Plinius. 



36. Menelaus. 



37. Manilius. 



38. The Caucasus Mount- 



ains. 



39. Eudoxus. 



40. Aristotle. 



41. The Alps. 



42. Plato. 



43. Archimedes. 



44. The Apennines. 



45. Eratosthenes. 



46. Copernicus. 



47. The Carpathian Mts. 



48. Timocharis. 



49. Lambert. 



50. Euler. 



51. Aristarchus. 



52. Kepler. 



53. Flamsteed. 



The early selenographers certainly must have been men of vivid 

 imagination, and the romantic names they gave to the lunar land- 

 scapes, and particularly to the " seas," add a charm of their own to 

 the study of the moon. Who would not wish to see the " Bay of 



VOL. XXXI. 31 



