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Table 1:
Rodriqes & Greenwich: Int. Cont. = 6,26; Ext. Cont. = 8,75
Paris: Int. Cont. = 6,37; Ext. Cont. = 8,18
Bologna: Int. Cont. = 6,09; Ext. Cont. = 9,06
Upsal: Int. Cont.= 6,91; Ext. Cont. = 8,47
Stokholm: Int. Cont. = 6,55; Ext. Cont.= 8,57
Cajaneburg: Int. Cont. = 7,15; Ext. Cont. = 8,8
Tornea: Int. Cont. = 6,93; Ext. Cont. = 8,44
Tobolsk: Int. Cont. = 7,36; Ext. Cont. = 8,36
8)53,62(6,70); 68,25(8,53.
Table 2:
Cape & Grenwich: Int. Cont. = 8,40; Ext. Cont. = 8,48
Paris: Int. Cont. = 8,56; Ext. Cont. = 8,19
Bologna: Int. Cont. = 8,54; Ext. Cont. = 8,59
Upsal: Int. Cont. = 8,57; Ext. Cont. = 8,36
Stokholm: Int. Cont. = 8,33; Ext. Cont. = 8,45
Cajaneburg: Int. Cont. = 8,56; Ext. Cont. = 8,33
Tornea: Int. Cont. = 8,45; Ext. Cont. = 8,35
Tobolsk: Int. Cont. = 8,64; Ext. Cont. = 8,32.
8)68,01(8,50)67,03(8.38
So that the parallax of the Sun, by a mean of eight comparisons of the internal [[strikethrough]]? [[/strikethrough]] contact at the [[underline]]Cape[[/underline]], is = 8,60[[superscript]]s.[[/superscript]] and of the external contact = 8,38[[superscript]]s.[[/superscript]]. But by the internal contact at [[underline]] Rodriques[[/underline]] it is = 6,70. and by the external it is, [[=?]] 8,53 [[superscript]]s.[[/superscript]] this last determination agreeing [[strikethrough]] with [[/strikethrough]] very nearly with that by both the contacts at the [[underline]] Cape [[/underline]]; a strong proof that there must be an error of one minute in the time of the internal contact at [[underline]] Rodrigues [[/underline]]. Let us therefore suppose that the internal contact happened there at 0h 35m 4s [[?]] and then by_ _ _ _
Table 3
Rodrigues & Greenwich 8,33 [[underline]]Int. Cont.[[/underline]]
Paris -----8,58
[[underline]]Bologna[[/underline]]-----8,54
[[underline]]Upsal[[/underline]]-----8,58
[[underline]]Stokholm[[/underline-----8,07
Cajaneburgh-----8,57
Tornea-----8,33
Tobolsk-----8,62
8)67,6298,45[[superscript]]s.[[/superscript]]
The very near agreement of the determination of the Sun's paralax, both by the internal and external contacts at the [[underline]] Cape of Good Hope[[/underline]] Is a strong proof of the goodness of those two observation; and this is confirm. by the external contact at [[underline]]Rodrigues[[/underline]], giving the very same determination. It manifestly, therefore, follow, that there must be an error of one minute of time, in setting down the internal contact at [[[underline]] Rodrigues [[/underline]]:And (as has been remarked in Mr. [[underline]]Shorts'[[/underline]] second paper on the Sun's parallax, printed in the [[underline]] Philosophical Transactions [[/underline]] ) the duration of the egress at [[underline]] Rodrigues[[/underline]] likewise requires such a correction of the time of internal contact. What reasons M. [[underline]] Tingre [[/underline]] had to make the alterations of his times in his memoir on this subject, he himself best can tell; for any part, I can only guess at them.
Gentleman's Magazine for June 1766 p. 277 & 278.
By altering the said observation of [[underline]]M[[superscript]]r.[[/superscript]] Tingre [[/underline]] of the internal contact, and comparing a great number of observations and computations, Mr. [[underline]] Short [[/underline]], in the last Vol. of the Philos. Trans. tells us they all coincide so near, that there cannot be an error in the Sun's parallax 8,56[[superscript]]s.[[/superscript]] of one tenth of a second, and probably the error does not exceed one five hundredth of the whole quantity. But the Rev[[superscript]]d.[[/superscript]] Mr. [[underline]] Hornsby [[/underline]],M.A. professor of Astronomy at [[underline]] Oxford [[/underline]] , and F. R. S. in the same Volume of the [[underline]] Transactions[[/underline]], concludes thus, That taking the mean of a great number of observations and computations, the Sun's parallax is 9,732 [[superscript]]s.[[/superscript]] and in this quantity we must either acquiesce, or reman as ignorant of the true quantity of it as we were before. The [[underline]] French [[/underline]] astronomers still differ, they make the Sun's parallax from some observations, 10,4 [[superscript]]s.[[/superscript]] from others, 9,55 [[superscript]]s.[[/superscript]] and even 7,5 [[superscript]]s.[[/superscript]] Hence this
Transcription Notes:
I wasn't sure how to communicate the written display of table. The phrases "Table 1", "Table 2", and "Table 3"" are not written in the original document.
