CONTENTS. 



CHAPTER I. 



PAGE 



Introduction : Definition of Physiology — The Actions of Living 

 Matter — Cells and their Functions — The Function of the Sarcode 

 of the lowest Animals — Dual and Triple Functions of an Organ 

 — Law of Von Baer — Classification of the Invertebrata — Division 

 of Physiological Labour, &:c. . . . . . i 



CHAPTER II. 



The. Chemistry of Protoplasm : " The Physical Basis of Life " — 

 Analyses of Albi;min — Chemical and Physical Properties of 

 Albumin — Lieberkiihn's Formula for Albumin — Schorlemmer 

 on the Synthesis of Albumin — Loew and Bokorny's Researches — 

 Researches of Reinke, Mori, Kretzschmar, Griffiths, Schiitzen- 

 berger, Palladin, Schulze, and Kisser, on Albumin — Decomposition 

 Products of Albumin or Protoplasm — Latham's Formula for 

 Albumin — Spencer's Definition of Life, &c. . . .10 



CHAPTER III. 



Digestion in the Invertebrata : Digestion in general — Modes of 

 Nutrition — Digestion in the Protozoa - Phosphorescence and 

 Digestion — Digestion in the Porifei-a, Cvlenterata, Echinodermata, 

 TrichoscoUces, Nematoscolices, Chictogaatha, Arthropoda, Polyzoa, 



