76 ENTOZOA FOUND IN MAN. 



sometimes, also, the segments issue spontaneously 

 during the intervals between the evacuations, and 

 may be discovered in the clothes or in the bed of the 

 patient. 



The taenia is seldom ejected by vomiting, but 

 several cases are recorded in which portions of taenia, 

 or the cucurbitini, have been ejected through the 

 mouth during the action of an emetic, or during 

 a fit of coughing, caused probably by the reflex 

 irritation produced by the passage of the taenia from 

 the small intestine into the stomach. 



The duration of the existence of taenia is some- 

 times very long, and instances of persons who have 

 voided fragments of taenia during a continuous period 

 of ten or twelve years are not rare. It appears 

 very probable that in these cases several worms exist 

 successively. 



In the majority of the persons who suffer from 

 taenia there exist a general indisposition, an anxious, 

 restless manner, and more or less strongly-marked 

 and persistent derangements of digestion, of nutrition, 

 and of the nervous system. At first, they do not 

 know to what cause the impairment of their health 

 should be attributed, and they blame, in succession, 

 various organs, especially the liver and stomach, until 

 the expulsion of a portion of the taenia serves to 

 show what their sufferings are due to. 



The frequency, variety, and severity of the symp- 

 toms occasioned by taenia usually bear a marked 

 relation to the constitution of the patient. They are 

 more apparent in those men who are of a nervous 

 temperament and of great susceptibility than in 

 others ; and the symptoms are generally more 



