PROGRESS OF VETERINARY SCIENCE AND ART. 81 
three drachms, and a scruple less than the right, although 
the former contained all the bladders. Hering could not find 
any heads of the coenurus on the interior of the sacs, and he 
held them to be yet undeveloped hydatids. — Repertorium fur 
Thoerheil , p. 21, 1855, Stuttgart. 
In the second volume of the Milan Veterinary Journal , 
at page 52, is a case of sturdy recorded by Patellani ; it oc- 
curred in a two-years-old animal, that had shown for several 
days attacks of madness, and in one of these it had broken 
a horn off. Patellani found her lying senseless on the ground, 
the head bent on one side, the forehead hot, painful on per- 
cussion, the sound produced hollow. On examination after 
death, the membrane of the brain was found injected, and in 
the right ventricle of the cerebrum were hydatids with several 
heads. 
The trephine has of late years been much recommended 
in cases of cerebral hydatids in cattle ; and in Bavaria and 
Wurttemberg it has frequently been employed, and often 
with good results. At the Clinique of the Munich Veterinary 
School, in the month of November, 1854, a year-old heifer 
was presented with expansion of the right frontal bone ; 
there were symptoms of giddiness with turning towards the 
right side, dulness, &c. Ramoser found, on percussing the seat 
of the disease, that the sound was most hollow to the left. 
The case was observed for forty-three days, during which time 
the symptoms became more severe ; the animal was trephined, 
and about two ounces of serum passed out, followed by the 
bag of the parasite. The wound would have been closed 
with a clay plaster, but the animal had to be slaughtered 
the following day. The membranes of the brain were 
inflamed, especially to the right, and blood was extrava- 
sated on its surface : the expansion, thinning, and even per- 
foration of the upper part of the right lateral ventricle, 
showed that the bladder was lodged in the ventricle itself, 
as had been seen the previous year, in another case that 
had been operated upon. Death was then attributable to 
the far advanced stage of the malady, and to the abrupt 
collapse of the parietes of the ventricle, after contraction 
of the bladder. — Munchen Jahresber , for 1854-55, p. 13. 
Hydatids occur much less frequently in the brains of 
cattle in Great Britain than in other countries, as Youatt 
has correctly said, in his treatise on the ‘ Diseases of the Ox/ 
It occurs only in the young animal. Indeed, it obeys the 
same laws that guide the development of the coenurus in the 
sheep, and it is a well-established fact that it is only when 
animals are growing that the germs for the propagation of 
