196 ENTOZOA FOUND IN MAN. 



rheumatism, are also experienced in other parts of 

 the body, especially in the muscles. 



Vomiting is frequently one of the earliest symp- 

 toms of cerebral hydatid tumours, and is also one of 

 the most persistent, and of the least amenable to 

 treatment. 



Repeated fits of syncope, giddiness, and convul- 

 sive paroxysms often occur at the commencement of 

 the affection, and continue throughout its whole 

 course. The convulsions, which return at variable 

 intervals, sometimes assume an epileptic character. 



The injury to the motor functions is manifested 

 by the appearance of hemiplegia, or of paraplegia ; 

 these complications have been known to come on 

 suddenly with great severity, but they are more 

 usually ushered in by feebleness of the Hmbs, which 

 becomes gradually more marked, until the patient is 

 partially or completely paralysed. Simultaneously 

 with the destruction of the motor power, a pro- 

 gressively advancing diminution of one or more of 

 the senses will be observable. 



Paralysis is one of the most common phenomena, 

 but when the hydatids are of small size, and are 

 disseminated throughout various parts of the en- 

 cephalon, it does not come on until an advanced stage 

 of the affection. The paralytic symptoms, taken as 

 a whole, usually differ from those which characterise 

 an acute disorder of one of the hemispheres of the 

 brain ; in fact, owing to its situation, and its great 

 bulk, the hydatid tumour compresses both of the 

 lateral halves of the brain, and frequently also 

 some of the cranial nerves ; a group of peculiar 

 symptoms, some of which are rarely to be found 



