[226]. By an agreement, entered into, on the 18th of May, 1773, between commissioners appointed by the legislatures of New-York and Massachusetts, respectively, for the settlement of a partition-line of jurisdiction between those (then) provinces, on the eastern part of New-York, and from the southern to the northern boundaries of Massachusetts, (then called Massachusett’s Bay;) in compliance with the king’s recommendations, which had been previously signified to sir Henry Moore, and Francis Barnard, Esq. the then governors of those provinces. The commissioners, on the part of New-York, were John Watts, Robert R. Livingston, and William Nicoll, Esq’rs. and on that of Massachusetts, William Brattle, Joseph Hawley, and John Hancock, Esq’rs. These gentlemen met, in pursuance of their appointment, at Hartford in the (then) province of Connecticut, where, after divers conferences, they concluded on the following line, as the one which should, at all times thereafter, be the line of jurisdiction between Massachusetts and New-York, wheresoever the latter, on its eastern boundary, should adjoin on the former: that is to say, beginning at a place fixed upon by the two governments of New-York and Connecticut, about the year 1731, for the north-western corner of a tract of land commonly called the Oblong, or Equivalent Land; and running from that corner, north, 21° 10′ 30″ east (as the needle then pointed,) to the northern line of Massachusetts. This agreement was ratified by the governors of Massachusetts and New-York, on the same day; and commissioners were accordingly appointed by both provinces, before the revolution, to run the line thus defined. It was, in part, then effected; but those commissioners not having been able to proceed, by reason of an eventual disagreement between them, this line was finally run out, surveyed, ascertained and marked, by the commissioners appointed by congress, whom the two governments concerned had empowered to make such appointment.
[227]. In the beginning of the same year, Mr. Rittenhouse was elected one of the twelve Counsellors of the American Philosophical Society; an office in that institution, created by the incorporating act of the 15th of March, 1780.
[228]. There was some unaccountable mismanagement in the whole of this business, on the part of the society. Mr. Mayer’s letter is published entire, in the original Latin: but the translation ends, abruptly, in the middle of a paragraph. When Mr. Rittenhouse was directed by the society to answer that letter, he requested the writer of these memoirs to furnish him with an English translation of it, for the purpose of comparing with it one which he had himself attempted. That translation (which, by Mr. Rittenhouse’s desire, was made to conform pretty closely to the original,) is inserted in the Appendix, entire, together with the hitherto unpublished answer.
[229]. Charles Theodore, Duke of Bavaria, who is denominated by Lalande, “an illustrious patron of the sciences.”
It is about fifty years since this prince built an observatory near the gardens of Schwetzingen, two leagues from the city of Manheim; and there Father Christian Mayer pursued his astronomical labours for several years. But about the year 1772, the same prince erected another and a more magnificent edifice (of 108 Rhenish feet in height,) at Manheim, for the same purpose: where Father Mayer made numerous and highly estimable observations; as may be collected from his work, entitled, De novis in Cælo Siderio Phænomenis. Lalande places this observatory in N. Lat. 49° 29′ 15″.
[230]. Among those who have observed, since Dr. Herschel’s discovery of the Georgium Sidus, new phænomena in the heavens, may be ranked the following:
M. Piazzi, a Sicilian astronomer, who, on the 1st of January, 1801, discovered a small planet revolving round the sun, between the orbits of Jupiter and Mars, named Ceres: Dr. Olbers, of Bremen, who, on the 28th of March in the following year, discovered another small planet, to which he gave the name of Pallas, which revolves round the sun nearly at the same distance, and in the same time, as Ceres; and afterwards, viz. on the 29th of March, another planet, which he called Vesta; similar to the others, both in its position and magnitude: and
Mr. Harding, of Lilienthal, who, between these two last mentioned periods, viz. on the 1st of September, 1804, discovered a fourth planet (but the third in the order of time,) also small, to which he gave the name of Juno; resembling Pallas in a great excentricity of its orbit, and the inclination of this to the ecliptic, and placed at nearly the same distance from the sun.
The Georgium Sidus was not discovered until about fifteen years before Dr. Rittenhouse’s death; and the first discovered of the four last mentioned planets was not known in America, for almost five years after that event.
[231]. “There is perhaps no individual of the present age,” (says the writer of the article “Astronomy,” in the New Edinburgh Encyclopædia, now publishing under the direction of Dr. Brewster,) “to whom practical astronomy owes deeper and more lasting obligations, than to Mr. Edward Troughton. The great improvements which he has made upon astronomical instruments, and the extreme accuracy with which he divides them, have rendered his name celebrated in every part of Europe, and have inspired the practical astronomer with a confidence in his observations, which he had hitherto been unaccustomed to feel. There is scarcely an observatory of any consequence, either in this country” (Great-Britain,) “or the continent, that does not contain some of Mr. Troughton’s instruments; and there are few series of observations, in which they have not been used. The admirable observations of Mr. Pond, on the declinations of the principal stars, were made with an azimuth circle of Mr. Troughton’s construction. The mural circle, which Mr. Groombridge of Blackheath uses, in his numerous and accurate observations, was made by the same artist. The splendid mural circle, of 6 feet 2 inches radius, which Mr. Troughton is at present preparing for the Royal Observatory at Greenwich, will cost 700l.” (equivalent, in money of the United States, to $311111/100,) “and will be one of the most magnificent and accurate instruments that has ever been erected.”