I Feel Like An Old Warhorse At

Worms Have Played A More Important Part In The History Of The World Than Humans Would At First Suppose.

We Behold The Face Of Nature Bright With Gladness.

About Thirty Years Ago There Was Much Talk That Geologists Ought Only To Observe And Not Theorise; And I Well Remember Some One Saying That At This Rate A Man Might As Well Go Into A Gravel-pit And Count The Pebbles And Describe The Colours. How Odd It Is That Anyone Should Not See That All Observation Must Be For Or Against Some View If It Is To Be Of Any Service!

The Instruction At Edinburgh Was Altogether By Lectures, And These Were Intolerably Dull, With The Exception Of Those On Chemistry.

The Lower Animals, On The Other Hand, Must Have Their Bodily Structure Modified In Order To Survive Under Greatly Changed Conditions. They Must Be Rendered Stronger, Or Acquire More Effective Teeth Or Claws, In Order To Defend Themselves From New Enemies; Or They Must Be Reduced In Size So As To Escape Detection And Danger. When They Migrate Into A Colder Climate They Must Become Clothed With Thicker Fur, Or Have Their Constitutions Altered. If They Fail To Be Thus Modified, They Will Cease To Exist.