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Thus You May Multiply Each Stone 4 Times & No More For They Will Then Become Oyles Shining In Ye Dark And Fit For Magicall Uses. You May Ferment Them With Gold And Silver, By Keeping The Stone And Metal In Fusion Together For A Day, & Then Project Upon Metalls. This Is The Multiplication Of Ye Stone In Vertue. To Multiply It In Weight Ad To It Of Ye First Gold Whether Philosophic Or Vulgar.

From What Has Been Said It Is Also Evident, That The Whiteness Of The Sun's Light Is Compounded All The Colours Wherewith The Several Sorts Of Rays Whereof That Light Consists, When By Their Several Refrangibilities They Are Separated From One Another, Do Tinge Paper Or Any Other White Body Whereon They Fall. For Those Colours ... Are Unchangeable, And Whenever All Those Rays With Those Their Colours Are Mix'd Again, They Reproduce The Same White Light As Before.

Therefore, The Causes Assigned To Natural Effects Of The Same Kind Must Be, So Far As Possible, The Same.

Thus Far I Have Explained The Phenomena Of The Heavens And Of Our Sea By The Force Of Gravity, But I Have Not Yet Assigned A Cause To Gravity. Indeed, This Force Arises From Some Cause That Penetrates As Far As The Centers Of The Sun And Planets Without Any Diminution Of Its Power To Act, And That Acts Not In Proportion To The Quantity Of The Surfaces Of The Particles On Which It Acts (as Mechanical Causes Are Wont To Do) But In Proportion To The Quantity Of Solid Matter, And Whose Action Is Extended Everywhere To Immense Distances, Always Decreasing As The Squares Of The Distances.

It Is Indeed A Matter Of Great Difficulty To Discover, And Effectually To Distinguish, The True Motions Of Particular Bodies From The Apparent; Because The Parts Of That Immovable Space, In Which Those Motions Are Performed, Do By No Means Come Under The Observation Of Our Senses. Yet The Thing Is Not Altogether Desperate; For We Have Some Arguments To Guide Us, Partly From The Apparent Motions, Which Are The Differences Of The True Motions; Partly From The Forces, Which Are The Causes And Effects Of The True Motions.