pumpkin seed or other vermifuges to swine to remove tapeworms, are 
not well taken. 
Of the flukes present in swine in this country, the common liver 
fluke, Fasciola hepatica, which occurs in swine, sheep and cattle, may 
be left for consideration in connection with the parasites of sheep, the 
Fig. 18. Paragonimus westermani. Eggs from mucus in lungs, x 475. 
From Ward and Hirsch, 1915. 
usual hosts. The lung fluke, Paragonimus westermani, is not un¬ 
common in swine in some parts of the United States, including parts 
of Texas, Oklahoma and Louisiana. The form in swine has been 
called P. kellicotti, as a different species from that in man, but the 
Fig. 19. Ascaris lumbricoides. Egg. Enlarged. From Leuckart, 1868. 
Japanese writers regard the forms from man and swine as identical. 
The eggs are coughed up and probably swallowed, as a rule, passing 
out in the manure. These eggs (Fig. 18) are 78 to 96 microns long 
by 48 to 60 microns wide, with an operculum or lid at one end. 
Of the nematodes of swine, probably the most important, as a 
rule, is the ascarid, regarded by most authorities at present as identical 
27 
