In making this suggestion, the author is well aware that Ephemerides of the four chief asteroids have been given annually in the Greenwich Nautical Almanac; but for the object proposed they are utterly useless.
Will any astronomer contend that these Ephemerides are true to ten seconds of arc?
Subsequent ephemerideswere prepared with more practical objects.
His tables of the moon are those now used for predicting the places of the moon in all the ephemerides of the world.
Since that time, the introduction into foreign ephemerides of the improved tables of Le Verrier have rendered them, on the whole, rather more accurate than our own.
The rule adopted, therefore, is to have all the ephemerides which refer to absolute time, without any reference to a meridian, given for Greenwich noon, unless there may be some special reason to the contrary.
The preceding are the principal astronomical and nautical ephemerides of the world, but there are a number of minor publications, of the same class, of which I cannot pretend to give a complete list.
Of the regular annual ephemerides the earliest, so far as I am aware, is the Connaissance des Temps or French Nautical Almanac.
The Nautical Almanac of the present day had its origin in the Astronomical Ephemerides called forth by the needs of predictions of celestial motions both on the part of the astronomer and the citizen.
At first they were not regular, annual publications, issued by governments, as at the present time, but the works of individual astronomers who issued their ephemerides for several years in advance, at irregular intervals.
It may be interesting to say something of the tables and theories from which the astronomical ephemerides are computed.
Two systems of eclipse elements are now adopted in the ephemeridesand tables; the one, that of F.
All the national annual Ephemerides contain elements of the eclipses of the sun occurring during the year.
His Ephemerides are the origin of the Nautical Almanack, and enabled Columbus and Vasco and Vespucci to sail the high seas; and Nuremberg, where he lived, became the chief seat of the manufacture of nautical instruments.
Ephemerides astrologicae operationes medicas spectantes, mentioned in the Biographisches Lexikon der hervorragenden Aerzte of E.
For it is to be observed that Astrology in his day was entirely in the hands of astronomers, who calculated their own ephemerides and pursued the higher methods of astrological calculation as presented in my "Profnostic Astronomy.
In most Ephemerides they are already calculated, so that the labour is considerably lightened.
Such tables are used in the offices of the national Ephemerides to construct ephemerides of the several planets, showing their exact positions in the sky from day to day.
These ephemerides of politics are not made for our slow and coarse understandings.
Slightly as they have considered their subject, I think this can hardly have escaped the writers of political ephemerides for any month or year.
The Ephemerides speaks of epilepsy manifested only on the birthday.
The Ephemerides contains an account of epistaxis without cessation for six weeks.
The Ephemerides contains an account of a case in which cystotomy was repeated four times, and there is another record of this operation having been done five times on a man.
Salmuth and the Ephemerides report questionable instances in which portions of the liver were ejected in violent vomiting.
Among the older writers who have mentioned abnormal modes of exit of the urine is Baux, who mentions urine from the nipples; Paullini and the Ephemerides describe instances of urination from the eyes.
Postmortem sweating is described in the Ephemerides and reported by Hasenest and Schneider.
Rhodius speaks of the sweat being sweet after eating honey; the Ephemerides and Paullini also mention it.
The Ephemerides and van der Wiel speak of a duplex funis.
The Ephemerides contains many instances of bloody tears and sweat occasioned by extreme fear, more especially fear of death.
The Ephemerides contains an incredible account of a heart that weighed 14 pounds.
The Ephemerides speak of bloodless abortion, and there have been modern instances in which the hemorrhage has been hardly noticeable.
Yellow milk has been mentioned in the Ephemerides and its cause ascribed to eating rhubarb.
Gerberon tells of an infant with a beard, and Paullini and the Ephemerides mention similar instances.
Alard relates as a case of elephantiasis that of a lady of Berlin, mentioned in the Ephemerides of 1694, who had an abdominal tumor the lower part of which reached to the knees.
The Ephemerides contains an account of hydrophobia caused by a human bite.
He will find the foreign ephemerides using uniform data worked out in the office of the "American Ephemeris and Nautical Almanac" at Washington for the years beginning with 1901.
The leading nations publish ephemerides of this sort.
In consequence I had no legal right to go on with the former, although the ephemerides of Europe were waiting for the results.
I volunteered to test this question by looking at the ephemerides of all the small planets in the neighborhood of Mars.
With a cosmopolitan spirit, and in the just appreciation of a general want, the excellent Ephemerides published at Washington, record all data useful to navigators calculated from the meridian of Greenwich.
The quantities as now given in the nautical ephemerides are for noon of the meridian for which they are computed, as Washington, Greenwich, &c.
France," he says, "created more than two centuries ago the most ancient nautical ephemerides in existence.
As these ephemerides are published several years in advance, there would be plenty of time for navigators to become familiar with the proposed change in time-reckoning before they were called upon to employ it in their calculations.
It does not involve any change in the calculations of the Ephemerides most in use amongst navigators, viz.
To avoid any chance of mistake, it should be prominently stated on each page of the ephemerides that mean time reckoned from mean midnight is kept throughout.
The requisite changes in the astronomical and nautical ephemerides would be easily made.
Now, I gather from Professor ADAMS' remarks that upon this question the ephemerides which we now employ have some important bearing.
It, perhaps, may be important to remark that we could not introduce this change immediately, since the ephemerides are already computed and published for three or four years in advance.
There are representations of curiosities, which we shall give an account of from the Ephemerides of the Curious.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "ephemerides" in a variety of sentences. We hope that you will now be able to make sentences using this word.
