CONTENTS. 



PAGE 



Introduction .., ... ... ... ... ... 1 



Life-history 3 



Swarm Spores ,..^_- 13 



Cell Theory ..." 15 



Nuclei ; 18 



Powers of Protoplasm 20 



Motion 20 



Negative Geotropism 26 



Capturing Food 28 



Rejection of Matter 29 



Species 30 



Classification 33 



Fructification 39 



Sporangium Walls ... ... ... ... ... 43 



Capillitium 44 



Opening of the Sporangia 53 



Spores 54 



Aberrant Forms 54 



Exosporese 55 



Acrasiese 58 



Unicellular Organisms 62 



Isomorphism 65 



The Individual and the Generation 67 



Death and Eeproduction 68 



Relations of the Group ... 72 



Their Relations in the Swarm Spore Stage 74 



Their Eelations in the Plasmodiiun Stage 76 



Their Relations in the Sporangium Stage 77 



Their Relations Reconsidered 77 



Distribution 78 



Suggestions on Study 79 



Bibliography ... ... ... ... ... ... 81 



