228 The Management and Diseases of the Dog. 
As in the accompanying drawing (Fig. 27), such a demon- 
stration may display a bunch of young tapeworm heads, 
one or all of them showing the crown of hooks (a), the 
FIG. 27. 
TAPEWORM-LIKE HEADS OF THE GID-HYDATID, (NEWMAN.) 
four suckers (4), and a multitude of minute oval calcareous 
particles (¢), which the old naturalists formerly supposed 
to be eggs. The common bladder vesicle, from which the 
heads project, exhibits cellular markings. 
The above figures are copied from Newman’s treatise, 
and I can testify to their perfect accuracy of detail. In 
one remarkable instance, recorded by Eichler, as many as 
2000 heads were displayed by a single cenurus. 
Dr. Cobbold proceeds to speak of the measures to be 
taken in such cases, and advocates the destruction of the 
tapeworms in their ova. He points out the necessity of 
the sheep-owner and grazier seeing that no dog, either 
belonging to himself or his neighbours, is permitted to go 
about the land distributing the eggs of tapeworms. with 
every act of defeecation, as well as by dropping the ova oft 
its coat.* Ifa dog harbouring tapeworms be allowed to 
* Easier to advocate than adopt. To prevent dogs trespassing cn 
some portion of land would necessitate a staff of watchers far beyond 
the ordinary »r-iber of farm servants. 
