Page:The evolution of worlds - Lowell.djvu/90

Schiaparelli first put astronomy on the right track. By attempting daylight observations of the planet, not

Sulla Rotazione Di Mecurio—Dr G.V. Schiaparelli.

toward night, but actually at midday, he made some remarkable discoveries, and though he did not detect the hitherto erroneous values of the volume, the mass, or the density, his method of observation paved the way for their ascertainment. What he sought, and found, was evidence of markings upon the disk by