Page:Popular Science Monthly Volume 61.djvu/394

388 Beer and Mädler: the Eye, the Maria, the Syrtis Major, the Sabæus Sinus. In general they perfectly reproduce their prototypes, while in detail they present a little more closely the appearance of the same

markings to-day. The map is a slight advance upon its predecessor, and a complete corroboration of it. In these portraitures Kaiser stood not alone. About the same date Lockyer, although he constructed

no map, made some excellent drawings quite confirmative of Kaiser's and rather better. So also did Dawes (Map III.), nicknamed the eagle-eyed for his ability to detect difficult phenomena.