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To this has been added a method for investigating the parallax of any phenomenon whatever, and its distance from the center of the earth, wonderfully illustrating meteorological doctrine: now first written and published,
BY
Thaddaeus Hagecius ab Hayck, Physician to His Imperial Majesty.
The "XB" is a printer's mark or decorative initial.
XB There have been added also the writings of other most learned men concerning the same star: and certain other things, which you will discover on the turned page.
An oval engraving depicts a winged figure, likely Time or a celestial deity, holding a scythe and an hourglass, enclosed within an ornate frame decorated with floral and scrollwork motifs.