

VON S I E B O L I) 



ON 



TAPE AND CYSTIC WORMS. 



CONTENTS. 



Author's Preface . 

 Introduction . 



CHAPTER I. 



Origin of Intestinal Worms . . . . . .3 



CHAPTER II. 



On the Tape- worm . . . . 31 



Encysted Cestoidea . . . . . .33 



The Scolex state . . . . . 35 



Development of Scolices . . . . . .37 



Proglottides . . . . . . 41 



CHAPTER III. 



Cystic Entozoa . . . . . . .47 



CHAPTER IV. 



On the origin of the Cestoid and Cystic Entozoa . . 57 



1. Experiments on feeding with Cysticercus pisiformis . . .59 



2. Experiments on feeding with Cysticercus tenuicollis . 62 



3. Experiments on feeding with Cysticercus cellulosee . . .66 



4. Experiments on feeding with Ccenurus cerebraUs . . 69 



5. Experiments on feeding with Echinococcus Veterinorum . . .73 



6. On diseases produced by Cystic worms and their prevention . . 77 

 Cysticerci in sausages . . . . . .85 



Cestoid epidemic of Iceland . . . . 87 



