Pure Earth Does Not Petrify, Because The

Pure Earth Does Not Petrify, Because The Predominance Of Dryness Over [i.e. In] The Earth Endows It Not With Coherence But Rather With Crumbliness. In General, Stone Is Formed In Two Ways Only (a) Through The Hardening Of Clay, And (b) By The Congelation [of Waters].

Pain Is A Sensation Produced By Something Contrary To The Course Of Nature And This Sensation Is Set Up By One Of Two Circumstances: Either A Very Sudden Change Of The Temperament (or The Bad Effect Of A Contrary Temperament) Or A Solution Of Continuity.

Now It Is Established In The Sciences That No Knowledge Is Acquired Save Through The Study Of Its Causes And Beginnings, If It Has Had Causes And Beginnings; Nor Completed Except By Knowledge Of Its Accidents And Accompanying Essentials.

Mountains Have Been Formed By One [or Other] Of The Causes Of The Formation Of Stone, Most Probably From Agglutinative Clay Which Slowly Dried And Petrified During Ages Of Which We Have No Record. It Seems Likely That This Habitable World Was In Former Days Uninhabitable And, Indeed, Submerged Beneath The Ocean. Then, Becoming Exposed Little By Little, It Petrified In The Course Of Ages.

The Theory Of Medicine, Therefore, Presents What Is Useful In Thought, But Does Not Indicate How It Is To Be Applied In Practice-the Mode Of Operation Of These Principles. The Theory, When Mastered, Gives Us A Certain Kind Of Knowledge. Thus We Say, For Example, There Are Three Forms Of Fevers And Nine Constitutions. The Practice Of Medicine Is Not The Work Which The Physician Carries Out, But Is That Branch Of Medical Knowledge Which, When Acquired, Enables One To Form An Opinion Upon Which To Base The Proper Plan Of Treatment.