Salusbury, Thomas, Mathematical collections and translations (Tome I), 1667
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              [
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              as in Fig.
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              5.] and the Axis, as before A C, by which the plane
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              of our Meridian would paſſe, in which plane ſhould alſo be the
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              Axis of the Suns revolution, with its Poles, one towards us, that
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              is, in the apparent Hemiſphere, which Pole we will repreſent by
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              the point E, and the other ſhall fall in the occult Hemiſphere,
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              and I mark it I. </s>
              <s>Inclining therefore the Axis E I, with the
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              riour part E, towards us, the great circle deſcribed by the Suns
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              converſion, ſhall be this B F D G, whoſe half by us ſeen,
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              ly B F D, ſhall no longer ſeem unto us a right line, by reaſon the
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              Poles E I are not in the circumference A B C D, but ſhall appear
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              incurvated, and with its convexity towards the inferiour part C.
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              </s>
              <s>And it is manifeſt, that the ſame will appear in all the leſſer
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              cles parallel to the ſame B F D. </s>
              <s>It is to be underſtood alſo, that
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              when the Earth ſhall be diametrically oppoſite to this ſtate, ſo
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              that it ſeeth the other Hemiſphere of the Sun, which now is hid,
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              it ſhall of the ſaid great circle behold the part D G B incurved,
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              with its convexity towards the ſuperiour part A; and the
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              ſes of the ſpots in theſe conſtitutions ſhall be firſt, by the arch
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              B F D, and afterwards by the other D G B, and the firſt
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              tions and ultimate occultations made about the points B and D,
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              ſhall be equilibrated, and not thoſe that are more or leſſe
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              ted than theſe. </s>
              <s>But if we conſtitute the Earth in ſuch a place
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              of the Ecliptick, that neither the boundary A B C D, nor the
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              Meridian A C, paſſeth by the Poles of the Axis E I, as I will ſhew
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              you anon, drawing this other Figure [
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              viz. </s>
              <s>Fig.
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              6.] wherein the
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              apparent or viſible Pole E falleth between the arch of the
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              nator A B, and the ſection of the Meridian A C; the diameter
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              of the great circle ſhall be F O G, and the apparent ſemicircle
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              F N G, and the occult ſemicircle G S F, the one incurvated with
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              its convexity N towards the inferiour part, and the other alſo
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              bending with its convexity S towards the upper part of the Sun.
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              </s>
              <s>The ingreſſions and exitions of the ſpots, that is, the termes F
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              and G ſhall not be librated, as the two others B and D; but F
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              ſhall be lower, and G higher: but yet with leſſer difference
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              than in the firſt Figure. </s>
              <s>The arch alſo F N G ſhall be
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              ted, but not ſo much as the precedent B F D; ſo that in this
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              ſition the paſſages or motions of the ſpots ſhall be aſcendent
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              from the left ſide F, towards the right G, and ſhall be made by
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              curved lines. </s>
              <s>And imagining the Earth to be conſtituted in the
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              poſition diametrically oppoſite; ſo that the Hemiſphere of the
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              Sun, which was before the occult, may be the apparent, and
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              minated by the ſame boundary A B C D, it will be manifeſtly
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              diſcerned, that the courſe of the ſpots ſhall be by the arch G S F,
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              beginning from the upper point G, which ſhall then be likewiſe
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              from the left hand of the beholder, and going to determine, </s>
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