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THE CANALS OF MARS
183

features. It will be interesting to study two drawings of this region made at the Lick Observatory, probably under the best possible conditions, by Campbell and Hussey, respectively.

It is not likely that any observatory is more favoured by its atmosphere for observations on this planet than the Lick on Mount Hamilton. Its telescope is the largest and finest in the world that has ever been especially

Figs. 33–34.—Drawings of Lacus Solis on Mars, by Messrs. Campbell and Hussey.

directed to Mars, and Barnard is one of the most cautious observers. It is therefore very noteworthy that on the face of Mars, as presented to Barnard in the Lick telescope, the features do not quite correspond to the channels of Schiaparelli and Lowell. When the air was exceptionally steady he could see a vast number of minute and very faint markings, which were not visible in the smaller telescopes used by the other observers. These

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