Salusbury, Thomas, Mathematical collections and translations (Tome I), 1667
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              <s>
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              nue, but will return to be according to the
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              Perpendieular. </s>
              <s>It is manifeſt that the Gen­
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              tre of the Sphære is in the Line F T. </s>
              <s>And
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              again, foraſmuch as the Portion of a Sphære
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              may be greater or leſſer than an Hemiſ­
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              phære, and may alſo be an Hemiſphære, let
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              the Centre of the Sphære in the Hemiſ­
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              phære be the Point T, & in the leſſer Por­
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              tion the Point P, and in the Greater the </s>
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              Point R. </s>
              <s>And ſpeaking firſt of that greater
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              Portion which hath its Baſe within the
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              Liquid, thorow R and L, the Earths Cen­
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              tre, draw the line RL. </s>
              <s>The Portion that is
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              above the Liquid, hath its Axis in the Per­
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              pendicular paſſing thorow R; and by
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              what hath been ſaid before, its Centre of
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              Gravity ſhall be in the Line N R; let it
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              be the Point R: But the Centre of Gra­
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              vity of the whole Portion is in the line F
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              T, betwixt R and F; let it be X: The re­
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              mainder therefore of that Figure, which is
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              within the Liquid ſhall have its Centre in
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              the Right Line R
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              X
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              prolonged in the part
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              towards
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              X,
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              taken ſo, that the part pro­
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              longed may have the ſame Proportion to
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              X R, that the Gravity of the Portion that
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              is above the Liquid hath to the Gravity
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              of the Figure that is within the Liquid.
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              </s>
              <s>Let O be the Centre of that ſame Figure:
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              and thorow O draw the Perpendicular L
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              O. </s>
              <s>Now the Gravity of the Portion that
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              is above the Liquid ſhall preſs according
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              to the Right Line R L downwards; and
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              the Gravity of the Figure that is in the
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              Liquid according to the Right Line O L upwards: There the Figure
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              ſhall not continue; but the parts of it towards H ſhall move down­
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              wards, and thoſe towards E upwards: &
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              this ſhall ever be, ſo long as F T is accord­
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              ing to the Perpendicular.</s>
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              A</s>
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              <s>COMMANDINE.</s>
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              <s>The Portion that is above the Liquid
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              hath its Axis in the Perpendicular paſſing
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              thorow K.]
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              For draw B C cutting the Line N K in
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              M; and let N K out the Circumference
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              A B
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              C D in G. </s>
              <s>In
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              the ſame manner as before me will demonſtrate, that the Axis
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              </s>
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