Indeed Upon Much That May Have To

Yes, It Is True That There Are Times When You Do Wonder If Things Are Worth It But Usually Those Moments Pass As Soon As They Have Come.

I Accept Extinction As Best Explaining Disjoined Species. I See That The Same Cause Must Have Reduced Many Species Of Great Range To Small, And That It May Have Reduced Large Genera To So Small, And Of Families.

It Was Always Understood That Plants And Animals, Though Completely Contrasted In Their Higher Representatives, Approached Each Other Very Closely In Their Lower And Simpler Forms. But They Were Believed Not To Blend.

The Best Opinion Now Is, That There Are Multitudinous Forms Which Are Not Sufficiently Differentiated To Be Distinctively Either Plant Or Animal, While, As Respects Ordinary Plants And Animals, The Difficulty Of Laying Down A Definition Has Become Far Greater Than Ever Before.

This Substance, Which Is Manifold In Its Forms And Protean In Its Transformations, Has, In Its State Of Living Matter, One Physiological Name Which Has Become Familiar, That Of Protoplasm.