D.C.) International Meridian Conference (1884 : Washington

“ If, on the contrary, any conclusion is to be drawn from the instructive debate at which we have assisted, it is that the principal, I will say more, the only merit of the Greenwich meridian—and our colleague from Great Britain just now reminded us of it by enumerating with complacency the tonnage of British and American shipping—is that there are grouped around it, interests to be respected, I will acknowledge it willingly, by their magnitude, their energy, and their power of increasing, but entirely devoid of any claim on the impartial solicitude of science. ”

“ I beg leave, therefore, to move an amendment in harmony with the resolution, at the same time leaving it to be settled by a subsequent resolution, whether the zero be at Greenwich or at the other side of the globe.
"That a meridian proper, to be employed as a common zero in the reckoning of longitude and the regulation of time throughout the world, should be a great circle passing through the poles and the centre of the transit instrument at the Observatory of Greenwich." ”

“ Well, gentlemen, I say that considerations of economy and of established custom should not make us lose sight of the principles which must be paramount in this question, and which alone can lead to the universal acceptance and permanence of its settlement. Furthermore, gentlemen, these motives of economy and of established custom, which have been appealed to as a decisive argument, exist, it is true, for the majority in behalf of which they have been put forward, but exist for them only, and leave to us the whole burden of change in customs, publications, and material. ”

“ Whatever we may do, the common prime meridian will always be a crown to which there will be a hundred pretenders. Let us place the crown on the brow of science, and all will bow before it.
Commander Sampson, Delegate of the United States, said that he thought that the Delegate of France, Professor Janssen, had explained very fully the advantages of a neutral meridian, but he thought that he had not explained how we are to determine the neutral meridian. ”

“ It is feared that we want to destroy habits fixed for centuries, and upset established usages.
In this respect, gentlemen, I think that we ought to be fully satisfied. The teachings of the past will be respected. It will be perceived that if we failed at the time of the Revolution, it is because we put forward a reform which was not limited to the domain of science, but which did violence to the habits of daily life. It is necessary to take the question up again, but with due regard to the limits which common sense and experience would prescribe to wise and well-informed men. ”

“ We therefore fully agree with you, gentlemen, as to the principle of a common international meridian, impartially defined and wisely applied, and we think that if the Congress should cause a useful reform, which has been so long expected, to be finally adopted, it would render a great service to the world, and one that would do us the highest honor. ”

“ As observatories, on account of the great accuracy of their operations, furnish admirable points of reference, each nation which was in a condition to do it connected with its principal observatory not only the geodetic or topographical work which was done at home—a very natural thing—but also general geographical or hydrographical work which was executed abroad, a practice which contained the germ of all the difficulties with which we are troubled to-day. ”

“ I will say that if, instead of the meridian of Greenwich, you designate the anti-meridian for the reckoning of universal time and for the initial point of cosmopolitan dates for the present, but for the future as the initial point also of local dates, the reform will amount to about an hour only, but it will still be a reform. In a word, the anti-meridian of Rome is the one which now furnishes dates to the entire world, and you propose to make the meridian of Greenwich or the anti-meridian do so in future. ”

“ In the early conditions of the human race, when existence was free from the complications which civilization has led to; in the days when tribes followed pastoral pursuits and each community was isolated from the other; when commerce was confined to few cities, and intercommunication between distant countries rare and difficult; in those days there was no requirement for a common system of uniform time. No inconvenience was felt in each locality having its own separate and distinct reckoning. But the conditions under which we live are no longer the same. ”

“ When the discussion of these great questions is begun, let each nation come and bring its share of sacrifices for this international progress. France, according to her usage, I may say so without vain glory as without false modesty, France will not remain behind. ”

“ It is obvious that the conception of the necessity of having a universal day has arisen from the more clear conception of the fact that time on the globe is essentially local; that the time upon any given line (supposing it to be a meridian) is not the time at the same moment on either side of that line, however small the departure from it may be; and for scientific accuracy it has, therefore, been thought desirable to have some absolute standard to which days and hours can be referred. ”

“ The expression "neutral system of longitude" is a myth, a fancy, a piece of poetry, unless you can tell precisely how to do it. He would vote for a neutral system if the French representatives can tell the Conference clearly how to decide that it is neutral, and satisfy them that it is not national in any way.
Mr. Janssen, Delegate of France, said:
I perfectly understand the objection of my honorable colleague, Prof. Abbe. He asks what is a neutral meridian, and adds that the metre itself does not appear to him to be a neutral measure, but to be a French measure. ”

“ Time may be compared to a great stream forever flowing onward. To us, nature, in its widest amplitude, is a unity. We have but one earth, but one universe, whatever its myriad component parts. That there is also but one flow of time is consistent with the plain dictates of our understanding. ”

“ The question of a universal hour is not of equal interest and importance to all. The United States of America, although comparatively a young nation, have done so much in the pursuit [Pg 179] of science and scientific investigation that they must have more than a common interest on the subject. The vast expanse of their country, stretching over sixty degrees of longitude, with a difference of time of more than four hours, almost compels them to adopt a universal hour. ”

“ Now, if any event which is taking place, or has taken place at any past time in the history of the world, is referred to the prime meridian, or is expressed in the time of any locality or of several localities, these times will all be different. The adoption of the universal day is to avoid any difficulty of that sort, and any event which has transpired will, when expressed in the time of the universal day—that is, according to the universal method—represent exactly the interval of time which has elapsed since the beginning of the Christian era. Nothing is gained or lost. ”

“ President, it does not seem to me that it is within the competence of this Conference to define what is local time. That is a thing beyond us.
Mr. W. F. Allen, Delegate of the United States, then said: Mr. President and gentlemen, all efforts to arrive at uniformity in scientific or every-day usage originate in a desire to attain greater convenience in practice. The multiplicity of coins of which the relative value can only be expressed by fractions, the various common standards of weights and of measures, are inconvenient both to the business man and the scientist. ”

“ In the face of this difficulty, which appears to me insurmountable, the only solution which, by its very nature, will not raise exciting questions of national pride is that of a meridian having a character of absolute neutrality. If the adoption of such a meridian was admitted in principle, I am certain that a discussion based upon pure science, and following the best conditions which it should realize, would conduct us rapidly to a practical settlement of the question. ”

“ A very natural pride has led the great nations to establish by law their own prime meridian within their own borders, and into this error the United States was led about 35 years ago.
Should any of us now hesitate in the adoption of a particular meridian, or should any nation covet the honor of having the selected meridian within its own borders, it is to be remembered that when the prime meridian is once adopted by all it loses its specific name and nationality, and becomes simply the Prime Meridian. ”

“ You see, gentlemen, that we enjoy absolute freedom, and that we are in nowise bound by the decisions of the Conference held at Rome. It is even desirable that those precedents should be appealed to as little as possible, inasmuch as we have scientists among us who are regarded as authorities in both the Old and the New World, and who are perfectly capable of directing us in technical matters, and of furnishing all the information that we can desire. ”

“ In my own profession, that of a seaman, the embarrassment arising from the many prime meridians now in use is very conspicuous, and in the valuable interchange of longitudes by passing ships at sea, often difficult and hurried, sometimes only possible by figures written on a black-board, much confusion arises, and at times grave danger. In the use of charts, too, this trouble is also annoying, and to us who live upon the sea a common prime meridian will be a great advantage. ”

“ I ask, would the twenty-six nations here represented accept our recommendation to adopt the neutral meridian? I greatly fear that the passing of the resolution would not in the least promote the settlement of the important question before the Conference. The world has already at least eleven different first meridians. The adoption of the new meridian contemplated by the Delegates from France would, I apprehend, simply increase the number and proportionately increase the difficulty which so many delegates from all parts of the earth are assembled here to remove. ”

“ In Great Britain the use of metrical weights and measures is authorized by law. Contracts can be made in which they are used, and the department which regulates the weights and measures of Great Britain is charged, consequently, with the duty of providing properly authenticated standard metric weights and measures for purposes of verification. It is quite true that the Government of England does not hold out any expectation that she will adopt the compulsory use of the metric system, either at the present time, or, so far as that goes, at any future time ”

“ There is no such interval of time as the commonly defined day everywhere and invariable. By our accepted definition, a day is local; it is limited to a single meridian. At some point on the earth's surface one day is always at its commencement and another always ending. Thus, while the earth makes one diurnal revolution, we have continually many days in different stages of progress on our planet.
Necessarily the hours and minutes partake of this normal irregularity. Clocks, the most perfect in mechanism, disagree if they differ in longitude. ”

“ All the popular ideas of men for thousands of years past will, perhaps, be overturned. It may happen [Pg 148] that when the day begins at Greenwich it will be 23 hours later at Berlin. The east will be confounded with the west, and the west with the east. If we made the day begin at the anti-meridian these questions would be avoided, and we should at one be with the rest of the human race. I believe that it would be better to adjourn till to-morrow to give us time to reflect; in this way we shall not risk by our devotion to science drawing upon ourselves popular criticism. ”

“ On the contrary, initial meridians for geography need not be fixed with quite such a high degree of accuracy as is required by astronomy; but, in compensation, their operation must be far reaching, and while it is useful to increase as much as possible the number of meridians of observatories, it is necessary to reduce as much as we can the starting points for longitudes in geography.
Further, it may be said that as the position of an observatory should be chosen with reference to astronomical considerations, so an initial meridian in geography should only be fixed for geographical reasons. ”

“ Certainly, it is an important step towards the establishment of one system of universal time, or, as it is designated in the recommendations, Cosmic time.
The alacrity and unanimity with which the change has been accepted in North America encourages the belief that the introduction of cosmic time in every-day life is not unattainable. The intelligence of the people will not fail to discover, before long, that the adoption of correct principles of time-reckoning will in no way change or seriously affect the habits they have been accustomed to. ”

“ Besides, if we observe that it is a question here only of expressing the desire that studies should be resumed upon the matter in question, is there anyone among us who would wish to oppose the liberal proposition which prejudges nothing in the solution of the question, but which will surely lead to important progress. I do not doubt, then, that all our colleagues will desire to unite in a resolution, which by its object and by the manner in which it is expressed, ought, it appears to me, to unite the suffrages of all. ”

“ From every consideration, it is evident that the day has arrived when our method of time-reckoning should be reformed. The conditions of modern civilization demand that a comprehensive system should be established, embodying the principle that time is one abstract conception, and that all definite portions of it should be based on, or be related to, one unit measure.
On these grounds I feel justified in respectfully asking the consideration of the Conference to the series of recommendations which I venture to submit. ”

“ For the present we decline the honor of immolating ourselves alone for progress of a problematic, and eminently secondary order; and it is with perfect tranquillity of conscience that we declare that we do not concur in the adoption of the meridian of Greenwich, persuaded as we are that France does not incur the reproach of retarding and of obstructing the march of science by abstaining from participating in this decision. ”