 | Percival Lowell - 1895 - 306 pages
...characteristic is this hopeless lack of happy irregularity. They are, each and all, direct to a degree. The lines are as fine as they are straight. As a rule,...trifle finer, possibly not above fifteen miles across. Their length, not their breadth, renders them visible ; for though at such a distance we could not... | |
 | 1895 - 954 pages
...end to the other. They are arcs of great circles, taking the shortest distance between their termini. The lines are as fine as they are straight. As a rule,...on the average to be less than a Martian degree, or between twenty and thirty miles, wide. Some are broader ; some even finer, possibly not above fifteen... | |
 | 1895 - 896 pages
...end to the other. They are arcs of great circles, taking the shortest distance between their termini. The lines are as fine as they are straight. As a rule,...on the average to be less than a Martian degree, or between twenty and thirty miles, wide. Some are broader ; some even finer, possibly not above fifteen... | |
 | 2000 - 104 pages
...haphazard in the look of any of them. Plotting upon a globe betrays them to be arcs of great circles.... The lines are as fine as they are straight. As a rule,...perceptible breadth, seeming on the average to be less than ... about thirty miles wide.... Their length is usually great, and in cases enormous. A thousand or... | |
 | Percival Lowell - 2006 - 130 pages
...end to the other. They are arcs of great circles, taking the shortest distance between their termini. The lines are as fine as they are straight. As a rule,...on the average to be less than a Martian degree, or between twenty and thirty miles, wide. Some are broader; some even finer, possibly not above fifteen... | |
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... definite manner. And this state of things exists all over the reddishochre regions. All the lines, with the exception of a few that are curved in a regular manner, are absolutely straight from one end to the other. They are arcs of great circles,... 