410 ATONIC DISEASES. 
and } a group of three as actually discharged from the intestine of 
a dog in which they were thus knotted. I have often seen from 
six to a dozen round-worms thus collected together, so as when 
discharged to form a solid mass as large as an egg. Like the 
last species, they are propagated by ova, but sometimes these are 
hatched in the body of the parent, so that a large worm may be 
ee aa 
seen full of small ones. This species occasions much more in- 
convenience than the maw-worm, but still far less than the 
tape-worm, supposing the two be distinct. ; 
Tape-worms in the dog are described by foreign writers as of 
five kinds, of which the Tenia soliwm and Bothriocephalus latus are 
common to man and the dog. The others are not readily distin- 
guished from these two, and all are now said to be developed from 
the hydatid forms found in the livers of sheep, rabbits, &c. The 
