...for The Shield May Be As Important

Seeing This Gradation And Diversity Of Structure In One Small, Intimately Related Group Of Birds, One Might Really Fancy That From An Original Paucity Of Birds In This Archipelago, One Species Had Been Taken And Modified For Different Ends.

So Great Is The Economy Of Nature, That Most Flowers Which Are Fertilised By Crepuscular Or Nocturnal Insects Emit Their Odour Chiefly Or Exclusively In The Evening.

But Just In Proportion As This Process Of Extermination Has Acted On An Enormous Scale, So Must The Number Of Intermediate Varieties, Which Have Formerly Existed, Be Truly Enormous. Why Then Is Not Every Geological Formation And Every Stratum Full Of Such Intermediate Links? Geology Assuredly Does Not Reveal Any Such Finely Graduated Organic Chain; And This, Perhaps, Is The Most Obvious And Serious Objection Which Can Be Urged Against The Theory. The Explanation Lies, As I Believe, In The Extreme Imperfection Of The Geological Record.

Every New Body Of Discovery Is Mathematical In Form, Because There Is No Other Guidance We Can Have.

The Man Who Walks With Henslow.