CONTENTS. XV 



alveolar colloid— Eelative frequency of hydatids in particular organs— Eesults 

 obtained by Rokitansky and Davaine— Oases recorded in English periodicals — 

 Statistics — Statements of Krabbe and Schleisner — Diagnosis and treatment- 

 Prevention .....••••• .P. 273 — 288 



CHAPTER IX. — ^BOTHBIOCEPHALUS LATUS. 



G-eneral and specific characters of Bothriocephalus latus — Its geographical distribution — 

 Anatomy arid development — Investigations of Schubart, Knoch, and Leuckart, 

 respecting the ciliated embryo — The adult worm occasionally found in dogs — 

 Probable source whence the larvse are obtained — ^Mode of egg-dischai-ge — Leuck- 

 art's account of a second species of Bothriocephalus infesting the human body. 



289—300 



CHAPTER X.— Nematoda. 



The Nematoda, or round worms infesting man — General and specific characters of 

 Ascaris lumhricoides — Structure and development — Yiews of Czermak, Bberth, and 

 Schneider — Experiments of Richter, Verloren, Davaine, and the Author — Practical 

 considerations — Remarkable cases — Treatment ..... 301 — 315 



CHAPTER XI.— Ascaris mysxax. 



The Author's discovery of the occurrence of Ascaris mystax as a human parasite — 

 General and specific characters — Vindication of the accuracy of the statements of 

 Irish naturalists — Cases by Bellingham, Pickells, Scattergood, and Leuckart — 

 Structure and development — General and specific characters of Trichocephalus dispar 

 — Organization — Remarks on Filaria lentis and F. trachealis . . . 316 — 338 



CHAPTER XII.— Trichina spiralis. 



General and specific characters of Trichina 5^2.Vai!«s— Historical notice — Our knowledge 

 of the structure, migrations, and development of Trichina, as gathered from the 

 investigations of Owen, Bristowe and Rainey, Virchow, Leuckart, and Davaine — 

 Medical importance of the subject— The flesh-woi-m epidemic, or so-called Trichi- 

 niasis — Cause of its prevalence in particular localities — Gamgee's practical observa- 

 tions — Value of the experimental method of research .... 334—355 



