~) \' 



^^•^. 



LIST OF ILLUSTRATIONS. 



IX 



^ Auia-b 



s 



^•n Functus 



■germs 



•. 1 Pig- 

 82. 



Modes of origin of Desmids and Diatoms . . 



■ungus-germs 



' ^"^^O-o of l^ ' ^4- 



83. Origin of Euglense from the Cell-contents of a Conferva 



(Gros) 



Resolution of Euglense into Smaller Organisms 



* • 



• ■ 



• • 



• 1 



85. Origin of Diatoms, Desmids, Pediastrese, and Algae from 



Euglense and other Vegetal Matrices (Gros) 



« • 



« • 



< I 



' 87. Development of Infusoria from the Protoplasm of Chara 



(Nicolet) 



• • 



• f 



(Gros) 



1 (Cohn) 



«i 



na (Pouchet) .. ; 91. Conversion of Encysted Euglena into Rotifer (Gros) 

 Ciliated Infusoria 92. Origin of similar Rotifers from Vorticellss and by direct 



• * 



II 



Transformation of Algoid Corpuscles 



» ■ 



us-<^ernis (Turpin) ; 93- Transformation of a mass of Chlorococcus Corpuscles into 



laticiferoub vessels 



the ' winter eggs ' of Hydatina senta 



• t 



^, I 94. Origin of Nematoids from Euglense (Gros) 



V tlip Q^- Development of Nematoids from Spores of Vaucheria 

 s Bassiana in ttie ^^ f xr 



■J. (Guerin- 96. Homogenetic Pangenesis in Tardigrades (Gros) .. 



_ w 



• • 



«• \ 



la na as 



it grows 



1' 



a t 



ment 



b. 



(Balbiani)" 



ritella (CarteO 



ts Transformabo^ ^ 



t) 



APPENDICES. 



a, Sarcina and allied products from Solutions containing 



Ammonic Tartrate and Sodic Phosphate 



• • 



« • 



Mass of Spiral Fibre from a Solution of Ammonic Tartrate 



and Sodic Phosphate 



Embryonic Spiral Fibres from a Solution of Ammonic 

 Carbonate and Sodic Phosphate 



within c 



ells ^' d. Sporangium-like body amidst mass of Spiral Fibre 



e. 



• • 



n 



/• 



of Nite 



11a 



Spiral Fibre with Sarcina-like bodies attached, from a 

 Solution of Sodic Silicate and Ammonic Phosphate •. 



Spores and Filaments similar to those found within Crystals 

 of Ammonic Tartrate 



. of ^' 



jitella 



Page 



421 



447 



licle ff -D " ' ^^* Modes of Origin and Development of Ciliated Infusoria.. 463 



476 



orticellx (Pineau) ; 88. Mode of Origin (?) and Development of Otostoma (Carter) 481 

 t a. closed flask 89. Arcellse and Peranema derived from Pangenesis of Rotifers 



486 



; 90. Transformations of Ciliated Infusoria (Pineau and Haime) 495 



508 



511 



516 



527 

 531 

 550 



IV 



VI 



vn 

 ix 



XIV 



■ t • 



XVIU 



[es 



