RESULTING PATHOLOGICAL CONDITIONS. 461 



organs were also infested by immense numbers. The muscle of the 

 heart was penetrated throughout its whole extent by larger and smaller 

 cysts, as if with tubercles. The capsule of the kidneys was still more 

 strikingly altered, thousands of little white knots were intercalated 

 between the swollen lymph glands and reddened lymphatics. All 

 these little knots, in spite of their resemblance to tubercles, contained, 

 as we have noted, young Cysticer'ci. This crowd of cysts followed 

 the course of the swollen lymphatic vessels and glands into the 

 inguinal region. The smaller glands, rich in connective tissue, were 

 particularly infested by the cysts, while the larger, although swollen 

 in many cases to the size of a walnut, were almost free from them. 

 The lymphatics of the neck presented a very similar appearance, but 

 somewhat less striking, since there were fewer cysts. Swelling and 

 reddening were always present, so that the whole lymphatic system 

 (with the exception of the thoracic duct) exhibited an abnormal 

 appearance. Some of the glands were not only reddened, but were 

 also full of extravasated blood which penetrated throughout their 

 entire mass. Even under the skin these bloody patches were to be 

 found at various places, and were sometimes as large as beans. 



Since the other viscera were comparatively, though not entirely, 

 free from Cysticerci (in the brain I found perhaps a dozen vesicles, 

 lying mostly free between the convolutions of the hemispheres) 

 I had almost no scruple in referring the death of the animal to the 

 pathological state of the lymphatics. The latter may also be traced 

 to the state of inflammation which resulted from the immigration 

 and development of such a number of parasites. 



My respected colleagues, Professor Seitz and Dr. Hosier, to whom 

 I communicated this case, were of exactly the same opinion, and 

 remarked the resemblance between this case and acute miliary tuber- 

 culosis. 



But whether death resulted from Helminthiasis, or from some 

 accidental complication, the experiment proved this much, that the 

 Cysticercus of Tcenia saginata inhabits the ox, and is developed not 

 only in the muscles, but also in the internal organs, and especially in 

 the lymphatics. 1 



1 So I concluded in 1861, and so have all my successors concluded, except Kiichen- 

 meister, who, in the second edition of his work on Parasites (p. 152), writes as follows : 

 " Leuckart's first experiment, taken by itself, teaches us nothing, except that, after 

 abundant feeding with the proglottides of Tcenia mediocanettata, the animal remained long 

 apparently unhurt, till suddenly (twenty-five days after feeding) it died, and exhibited a 

 miliary tuberculosis caused by the Cestode brood. Without the subsequent experiments, I 

 cannot regard the first as of special value in regard to Tcenia mediocanellata." The accom-' 

 panying figures will perhaps convince Kuchenmeister that the first experiment was of some 

 importance in regard to the Cysticercus in question. The results I was able to draw from 

 that case are still almost the only ones forthcoming on this point. 



