OF HYDATIDS. i269 



found to be much thinner on its right side than on 

 the left, and in particular, the riglit parietal bone 

 was not thicker than a wafer. In like manner, the 

 pleura, peritonaeum, and vaginal coat of the tes- 

 ticle have been greatly extended for a length of 

 time, but the containing membrane continues entire; 

 whereas, when hydatids are collected within these 

 membranes, a slight degree of inflammation is ex- 

 cited ; this is followed by adhesions, the cyst con- 

 taining the hydatids is destroyed, by which the 

 hydatid escapes from its original situation. 



" There is a much greater disposition to the 

 destruction of the cysts, which contain the hyda- 

 tid, and other containing parts, than when water is 

 accumulated within the shut cavities. Cases se- 

 cond, third, fourth, fifth, and ninth, are marked 

 proofs of this fact, and also the case which occur- 

 red to Dr. Home. The hydatids were in that in- 

 stance probably generated within the liver, from 

 which they extended to the abdomen, and also up- 

 wards towards the thorax ; and had the patient 

 lived but for a short time longer, they probably 

 would have gotten into the lungs, as the diaphragm 

 was extremely thin opposite to the sacs of the hy- 

 datids : the hydatids might also have gotten into 

 the brandies of the trachea, and been discharsred 

 by coughing. 



'• In the same manner, hydatids, formed in the 

 substance of the kidneys, have worked their way 

 out of the pelvis of that organ, and have been dis- 

 charged with the urine. 



