In The First Quarter Of The Nineteenth

The Well-known Fact That The Form Of A Specific Substance, E.g. Water, And Hence Its Properties Can Alter Without A Change In Composition Was Disposed Of By The Formal View That A Physical, Not A Chemical, Process Was Involved.

The Worst Manifestations Of Exhaustion Were Successfully Cured By A Long Period Of Rest But It Was Immediately Apparent To Me That I Had Lost Once And For All My Former Capacity For Carrying Out Experimental Work Until Physically Tired.

My Only Supporter And Comrade-in-arms Was Georg Helm, Who Had Endeavored To Formulate An Energetic Conception Of Science Before Me And Had Presented His Results In A Treatise [die Lehre Von Der Energie] Exhibiting Great Independence Of Thought. But We Were Separated By His Aversion To A Realistic Conception Of Energy. Consequently, Each Of Us Considered The Other Only A Half Ally, Toward Whom An Attitude Of Caution Was Necessary.

Nowadays, However, We Recognize That Simultaneously With The Typical Case Of A Chemical Reaction A Typical Case Of Catalytic Effect Had Been Studied Which Constitutes A Limiting Case.

For, With Pure Water The Inversion Of Cane Sugar Scarcely Proceeds And Subsequently It Required Very Thorough, Difficult Studies Before This Effect And Its Order Of Magnitude Were Established.