MST ok ILIvUSTRATlbirs. ' ' ix 



,■ ^ ' ■ • . ■ . ' '''•" 



P^S- 43 Showhig ^hapes of abnormal. .e.ggs sometimes found. page 



(From von, Durskr af-tef. Lando,is) . . . .'.V 178 



Fig. 44. Diagramnuuic reprcsciltatioir (if; the life history of a 



Coccidimi). (Aftei- Cole and 1 ladley) 184 



Fig. 45. Ten^day White Leghot'n' chick'^ ;[ijiowing sj'mptoms of 



baciHary white di'irrhea.. (After Rettger and 



, ^ Stonehuni )••••••••••■• <i •■•• -, '• • ■ 189 



Fig. 46. Normal ten-day White 'l,dghorn chicks. (After Rett- 

 ger and Stonebufh) ■. . .-. 189 



Fig. 47. Trachea (windpipe) 'of -a .'pheasant, 'showing gape 

 worms iSyngf.iinifs tnn-licalis) attached to the mu- 

 cous membrane. ( Aftci^ Mcgnin) '. ". 196 



Fig. 48. .\ pair of Sviiiianius trachcaH^ attached. (After Meg- 



nm) :'. 190 



Pig. 49. A pair of Syngamus tnichcalis (After Megnin) .... 197 



(x\fter Megnin) 197 



