Fixity of Laws and Properties of Energy and Matter 

 — Permanence of Continents aNd Oceans — The 

 Permanent and the Changeable - Permanence of 

 Animal and Vegetable Forms and Structures — 

 Principles of Construction in the Parts of Trilo- 

 BiTES— In the Skeletons of Sponges — In Early 

 Vertebrates — In Plants — Laws of Fixity and 

 Diversity 



