In the course of his lecture Professor Lowell gave an account of the methods of planetary photography initiated and carried on with such success at the Lowell Observatory; and then proceeded to give some interesting particulars of his observations of Mars at the opposition of 1909, which resulted in one of the most important discoveries ever recorded in connection with that planet.
He stated that on the 30th September, 1909, when the region of the desert to the east of Syrtis Major came into view, after its periodic six weeks' invisibility due to the unequal length of the days of the earth and Mars, some long new canals were plainly observed which had not been visible when the region was previously in view. A long and careful investigation of fifteen years' records proved absolutely that not only had these canals never been seen before, but that they could not have existed. They are on a region which is frequently very favourably situated for observation, and could not possibly have been overlooked, for they are now the most conspicuous objects on that part of the planet. It is beyond question that they are not only new to us but new to Mars!
The two main canals run in a south-easterly direction from Syrtis Major, and with them are associated two smaller ones and at least two new oases; while, from their inter-connection, they are all clearly parts of one and the same addition to the general canal system; for they now fit in with the system as though they had always formed part of it. These new canals were not only seen and drawn, but several photographs were taken at different times.
Consider what this great discovery really means! In a region which has never been anything but a desert during the whole period over which our observational knowledge of Mars has extended, there are now strips of land many hundreds of miles in length and miles wide that have become fertile almost under our very eyes; and this result has been brought about by the passage through them of water which has artificially been carried there for the purpose of irrigation! We know this is so, for what we see is the growth of vegetation; and the systematic way in which the new canals have been fitted into the existing canal scheme proves the artificiality of the whole system.
Some sensational statements in the Press have fostered in many minds the idea that all these hundreds of miles of new canals were constructed within the very short period of six weeks! This is altogether wrong. It is the vegetation that has grown in six weeks, in consequence of the turning on of the water to the irrigation works. We have good scientific reasons for believing that irrigation works on Mars could be accomplished much quicker than on the earth; but, as the telescope does not enable us to see the works, we do not know how long they may have taken to construct. It may have been months, or years. We only see the results of the works when actually in operation.
When we consider these works and their results, surely it becomes impossible to resist the evidence of intelligent design which they furnish; while if we also remember the very recent development of these canals, the existence of life upon Mars at the present time seems to be demonstrated beyond the possibility of reasonable doubt! In what physical form that life is enshrined even our science must fail to reveal. Professor Lowell, however, pointed out that the inhabitants of Mars are not necessarily human beings, but their work clearly proves that they are beings endowed with a very high degree of intelligence. A study of the canal system reveals a marvellous conception marvellously carried into effect.
Observers at Flagstaff have, therefore, practically seen the completion of a work which is the creation of intelligent beings on Mars; and in the remarkable photographs shown we were, so to speak, able to look upon the results of that work—fertility in a region which had previously been an arid desert.
The water, as the lecturer remarked, was probably not in all cases conveyed by means of canals dug out of the soil, but we know that in some way—whether by canals, or by trunk lines of pipes and smaller subsidiary pipes, or otherwise—the land has been artificially irrigated and fertilised by water, which could not possibly have taken the course it has without being intelligently directed. Tunnelling would be easy on Mars.
Professor Lowell spoke of these matters in well-weighed and well-chosen phrases, which carried conviction of his earnestness and sincerity to the minds of his hearers; and we observed that the audience was evidently profoundly impressed by the importance of his statements. This fact seemed to us very significant, as he was addressing one of the most brilliant assemblies—representing many branches of science—ever gathered within the walls of the Royal Institution. The numerous photographs showing the Martian canal lines were projected on to the screen by a lantern, and thus their convincing evidence was clearly brought before the whole of that vast audience.