Category: Science - Earth/Agricultural/Farming

Mars and Its Canals

From time immemorial travel and discovery have called with strange insistence to him who, wondering on the world, felt adventure in his veins. The leaving familiar sights and faces to push forth into the unknown has with magnetic force drawn the bold to great endeavor and fire...

Chapters

22. CHAPTER XVIII

Rightly viewed, no more subtle tribute could be paid to the remarkable character of the phenomenon of gemination than the scepticism with which it was immediately received and w...

27. CHAPTER XXIII

So far in our account of the phenomena we have regarded the lines, the spots, and everything that is theirs solely from the point of view of their appearance at any one time. In...

36. CHAPTER XXXII

That Mars is inhabited by beings of some sort or other we may consider as certain as it is uncertain what those beings may be. The theory of the existence of intelligent life on...

10. CHAPTER VI

Polar expeditions exert an extreme attraction on certain minds, perhaps because they combine the maximum of hardship with the minimum of headway. Inconclusiveness certainly enab...

16. CHAPTER XII

With the vanishing of its seas we get for the first time solid ground on which to build our Martian physiography. The change in _venue_ from oceans to land has produced a comple...

24. CHAPTER XX

Next to be caught of the details of this most curious network that meshes the surface of Mars was a set of phenomena stranger even than the lines; to wit, dark round dots standi...

12. CHAPTER VIII

In gazing at the successive phases presented by the polar caps as their annual history unrolls itself to view, beginning with vast white cloaks that in winter hide so effectivel...

9. CHAPTER V

Assured by physical properties that our visual appearances are quite capable of being what they seem we pass to the phenomena of the cap itself. Like as are the polar caps of th...

33. CHAPTER XXIX

Study of the fundamental features of Martian topography has disclosed, as we have seen, the existence of vegetation on the planet as the only rational explanation of the dark ma...

21. CHAPTER XVII

In 1879, while Schiaparelli was engaged in scrutinizing the strange _canali_ he had discovered on the planet the opposition before, he was suddenly surprised to mark one of them...

13. CHAPTER IX

In all ways but one our scrutiny of the planet is confined to such view as we might get of it from the car of a balloon poised above it in space; from which disadvantage-point w...

7. CHAPTER III

With Mars discovery has from the start waited on apparent disk. To this end every optical advance has contributed from the time of Galileo’s opera-glass to the present day. For...

19. CHAPTER XV

From the detection of the main markings that diversify the surface of Mars we now pass to a discovery of so unprecedented a character that the scientific world was at first loat...

18. CHAPTER XIV

If, now, we review with the mind’s eye the several features of Mars which we have surveyed with the bodily one, we shall be surprised to find to what they commit us. Suggestive...

29. CHAPTER XXV

Connected with the conduct of the canals is a phenomenon, examples of which were early noted in a general way by Schiaparelli and later, but of which the full import and exhibit...

14. CHAPTER X

Descending now equatorwards from the polar regions, and their in part paleocrystic, in part periodic, coating of ice, we come out upon the general uncovered expanse of the plane...

35. CHAPTER XXXI

That the canals and oases are of artificial origin is thus suggested by their very look; when we come to go further and inquire into what may be their office in the planet’s eco...

32. CHAPTER XXVIII

As rational science does not rest content with raw results, it now becomes obligatory, by marshaling the facts to suitable discussion, to seek to find out what they mean. Now, s...

17. CHAPTER XIII

Both for their evidence and their extent the great ochre stretches of the disk claim attention first. Largely unchangeable, these show essentially the same day after day and fro...

5. CHAPTER I

From time immemorial travel and discovery have called with strange insistence to him who, wondering on the world, felt adventure in his veins. The leaving familiar sights and fa...

11. CHAPTER VII

In addition to the polar caps proper and to the subsidiary polar patches that often in late summer flank them round about, other white spots may from time to time be seen upon t...

8. CHAPTER IV

Almost as soon as magnification gives Mars a disk that disk shows markings, white spots crowning a globe spread with blue-green patches on an orange ground. The smallest telesco...

15. CHAPTER XI

Since closer acquaintance takes from the _maria_ their character of seas, we are led to inquire again into their constitution. Now, when we set ourselves to consider to what suc...

20. CHAPTER XVI

Much more stands beyond. For, outdoing in suggestiveness the individual traits of the lines, is the relation shown by them to one another. It is the communal characteristics of...

6. CHAPTER II

As the character of the travel is distinctive, so the outcome of the voyage is unique. If he choose his departure-point aright, the observer will be vouchsafed an experience wit...

26. CHAPTER XXII

Photography holds to-day a place of publicity in the exposition of the stars. Directed by Draper to the heavens thirty-four years ago, the camera recorded then the first picture...

28. CHAPTER XXIV

As an interesting instance of the law of development we may take the career of the Brontes during this same Martian year; the Brontes witnessing individually to the same evoluti...

25. CHAPTER XXI

Functionally related to the canal system, and yet in look and location contrasted with its other details, is a further set of markings, detected by me in 1894, and reseen at sub...

34. CHAPTER XXX

Of the existence of animal life upon a far planet any evidence must, of necessity, assume a different guise from what its flora would present. Plant life should be, as on Mars w...

23. CHAPTER XIX

Seventeen years after the recognition of the canals in the light regions occurred another important event, the discovery of a similar set in the dark ones. The detection of thes...

30. CHAPTER XXVI

Last in time but not least in importance of the details of canal development to be detected is one that connects these strange features directly with the melting of the polar ca...

31. CHAPTER XXVII

Subject to change also are the oases; and in the same manner apparently as the canals. They grow less evident at a like season of the Martian year. They do this seemingly by dec...

4. PART IV

44. CHAPTER XIII. METHODS OF DERIVING THE POSITIONS AND PROPER MOTIONS OF

EXPLANATION OF THE TABLES OF THE APPENDIX.—I. Constants and Formulæ in Frequent Use. II. Tables Relating to Time and Arguments for Star Reductions. III. Centennial Rates of the...

1. PART I

2. PART II

3. PART III

42. CHAPTER XI. REDUCTION TO APPARENT PLACE. Section I. Reduction to Terms

of the First Order. II. Rigorous Reduction for Close Polar Stars. III. Practical Methods of Reduction. IV. Construction of Tables of the Apparent Places of Fundamental Stars. No...

41. CHAPTER X. REDUCTION OF MEAN PLACES OF THE FIXED STARS FROM ONE EPOCH

40. CHAPTER IX. PRECESSION AND NUTATION. Section I. Laws of the

39. CHAPTER VIII. ASTRONOMICAL REFRACTION. Section I. The Atmosphere as a

37. CHAPTER III. THE METHOD OF LEAST SQUARES. Section I. Mean Values of

38. CHAPTER V. THE MEASURE OF TIME AND RELATED PROBLEMS. Section I. Solar

43. CHAPTER XII. METHOD OF DETERMINING THE POSITIONS OF STARS BY MERIDIAN