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Fig. 56. Free embryo of common ascaris of man, casting its skin 82 
57-64. Embryology of the common pinworm {Oxi/ui'is vet'micularis) of man. 
while egg is still in the female worm 82 
65. Embryo of the common pinworm of man, in the eggshell, as found in 
the fresh feces 82 
66. Fnll-gi’own embryo of the common pinworm of man, escaped from its 
shell - 82 
67-70. Egg of common whipworm [rrichuris trichiura) of man, showing 
changes undei'gone while still in the female worm; hg. 69 is the stage 
found in fresh feces. 82 
71-73. Later stages of development of an allied whipworm {Trichuris a finis) 
of sheep and cattle, showing changes after the egg escapes in the 
feces - - - - 82 
74. Isolated emhiyo oi Trichirris afin is 82 
75. Egg of Cochin-China diarrhea worm {Sfrongifloides stercomlis) 83 
76. Ehabditiform embryo of .same 83 
77. Eilariform larva of same 83 
78. Egg of common liver fluke {Fasciola hejxitica i examined shortly after it 
was taken from the liver of a sheep. This is the same stage found 
in human feces 84 
79. Egg of common liver fluke containing a ciliate«l embryo (miracklium) 
ready to hatch 84 
80. Embryo of the common liver fluke boring into a snail 84 
81. Egg of lancet fluke (DicrocceZhn/? lanceaturn) with containeil embryo. . 84 
82. Egg of human-blood fluke {Schistosoma hscmatohium) with contained 
embryo, passed in the urine or in the feces 84 
83. Egg of beef-measle tapeworm {Txnia saginata), with thick eggshell 
(embryophore), containing the six-hooked embryo (onchosphere) . . 84 
84. Eggs of pork-measle tapeworm {Tivnia solium): a, with primitive 
^dtelline membrane; b, without primitive ^■itelline membrane 84 
85. Egg of the dwarf tapeworm {Hymenolepis nana) of man 85 
86. .Spraying with burning oil 94 
