The History Of Man Is Dominated By,

Chemistry Has Been Termed By The Physicist As The Messy Part Of Physics, But That Is No Reason Why The Physicists Should Be Permitted To Make A Mess Of Chemistry When They Invade It.

It Is Curious To Reflect, For Example, Upon The Remarkable Legend Of The Philosopher's Stone, One Of The Oldest And Most Universal Beliefs, The Origin Of Which, However Far Back We Penetrate Into The Records Of The Past, We Do Not Probably Trace Its Real Source.

With All Our Mastery Over The Powers Of Nature We Have Adhered To The View That The Struggle For Existence Is A Permanent And Necessary Condition Of Life.

Innumerable Entirely New Compounds Have Been Produced In The Last Century. The Artificial Dye-stuffs, Prepared From Materials Occurring In Coal-tar, Make The Natural Colours Blush. Saccharin, Which Is Hundreds Of Times Sweeter Than Sugar, Is A Purely Artificial Substance. New Explosives, Drugs, Alloys, Photographic Substances, Essences, Scents, Solvents, And Detergents Are Being Poured Out In A Continuous Stream.

The Laws Expressing The Relations Between Energy And Matter Are, However, Not Solely Of Importance In Pure Science. They Necessarily Come First In Order ... In The Whole Record Of Human Experience, And They Control, In The Last Resort, The Rise Or Fall Of Political Systems, The Freedom Or Bondage Of Nations, The Movements Of Commerce And Industry, The Origin Of Wealth And Poverty, And The General Physical Welfare Of The Race.