224 The Management and Diseases of the Dog. 
contains free embryonic filariz, and whether such immature 
worms, if found, correspond or not with the embryos found 
in the oviducts of the full-grown worms. It is probable 
that they do, for Dr. Krabbe, in his admirable resumé 
already referred to, states that the worm reproduces 
viviparously, and that the young are carried along in the 
circulation.* 
“ Estrongylus gigas (Fig. 25), or giant strongle, infests the 
kidneys of various animals ; but it is rarely met with in the 
dog. The males seldom exceed ten inches in length, but the 
females have been known to exceed a yard in measurement 
from head to tail, whilst their thickness equals that of the 
little finger. The accompanying figure of a female specimen, 
from Blanchard, is reduced to one-third of the natural size. 
FIG. 25. 
THE GIANT STRONGLE. (BLANCHARD.) 
“The remaining round worms of the dog are Spiroptera 
* In the Veterinary Journal for February, 1878, extracted trom 
the Customs Gazette there is an exhaustive and most interesting 
paper “ On Chinese Hzematozoa,” by Patrick Manson, M D 
