S2 
Fig. 43. — Egg of the conunon asearis lumbrieoide^ i of man, as fotmd in feces. Seen -with . 
STiperiicial focus. Greatly enlarged. i After Stiles. 1902b. p. 202. fig. 15>S.'i 
Fig. 44. — The same, as seen with median focus. Greatly enlarged. i .After Stiles. 19G2b. p. 202. fig. 159.) ( 
Figs. 45—54. — Embryolc^ of the common ascaris (Aseuns lumbrieoidef) of man. showing the changes i 
undergone by the egg after being discharged in the feces. i After Leuctart. 1S67. p. 213. fig. 154. ; 
Fig. 55. — Embryo of the common ascaris ( Ascarfs lumbrieoideg'i of man, in the eggshell. ( .After 
Leuekart. 1S67. p. 215. fig. 156. ' ' ( 
Fig. 56. — Free embryo of the common ascaris (Asctsrfs lumbrieoides) of man. casting its skin, f After i 
Leuekart. 1>67. p. 214, fig. 155. } ~ 
Figs. 57-64. — Embryology of the common pinworm ( Ortjuris rermiculari^) of man. showin,gthe changes 
undergone by the egg while in the female worm, f After Leuekart. 1868, p. 322, fig. 191. > 
Fig. 65. — Embryo of the common pinworm ( Oxt^iri^ vermieulari?) of man. in the eggshell, as found in , 
fresh f^-es. (After Leuekart, 1868. p. 328, fig. 196.) j 
Fig. 66. — FtiE-grown embryo of the common pinworm f Oxyuris rermicttlari^) of man. after it has . 
escape*! from the eggshell. ( After Leuekart. 1868. p. 328. fig. 195.) I 
Figs. 67 - 1 0 . — ^Egg of the common whipworm ( Triehnri^ trichiura i of man. showing changes undergone j 
while still in the female worm: fig. 70 is the stage found in fresh feces. ■ .After Leuekart. 1868, - j 
p. 491. fig. 275.) " _ ! 
Figs. 71-73. — Later stages of development of an allied whipworm {Trichuri^ amni^) of sheep and 
cattle, showing changes after the egg escapes in the feces. ( After Leuekart. 1%'8. p. 494, fig. 276.) 
Fig. 74. — Is«jlated embryo of Trfc/iuriV mV. ' After Leuekart. 1868, p. 495, fig. 277.^ j 
