PROGRESS OF VETERINARY SCIENCE AND ART. 531 
— say about eight to fourteen days — the development of the 
eggs in the sheep is not hindered but rather favoured. 
From Allen Thomson’s paper I glean that Kiichenmeister, 
by his experiments, and by those of Van Beneden and 
Haubner, it is now proved that the cysticercus cellulosae may 
be produced in great quantity in hogs by feeding these 
animals with ripe joints of the taenia solium ; but that this 
does not occur either in the dog or sheep. Kiichenmeister 
also mentions that he has not succeeded in obtaining the 
cysticercus cellulosae by feeding animals with the taenia 
serrata vera, nor with the taenia of the cysticercus tenuicollis, 
nor of the coenurus, nor echinococcus, while these taeniae are 
all readily obtained by feeding animals with the cysticercus 
pisiformis, and c. tenuicollis, and coenurus cerebralis. 
In conclusion, to show the practical bearing of the im- 
portant zoological investigations I have thus briefly alluded 
to, I must mention an incident which Dr. Schleisner describes 
in his ‘ Medical Topography of Iceland/ published in 1851. 
The inhabitants of Iceland are affected with what they call 
the “ liver plague,” which is said to affect one sixth of the 
population, and is exceedingly fatal. It is a long-protracted 
illness, which terminates with a painful death, and due to a 
cystic entozoon developed from the ova of a taenia. It arises 
from the large number of dogs kept there for herding cattle 
and sheep. With Dr. Allen Thomson, I may say that, 
“ should the further elucidation of this fact lead to the 
adoption of successful measures for the prevention of the 
disease, it will be a satisfactory instance of the assistance 
which may be furnished to rational pathology and the practice 
of medicine from physiological researches, which might at 
first sight have appeared to some to be very remote from 
such an application.” 
[We are reluctantly compelled to withhold the continu- 
ance, in the present number, of Mr. Gamgee’s article on the 
“ Contemporary Progress of Veterinary Science,” through 
press of matter. — Editors.] 
