218 



CEsophagostoma acuUim 1(58 



(Esophagostoma columbianum 16, 17, 20, 21, 22, 118, 145, 161, 162 



description 167 



determination of adult 166 



disease caused by 169 



diagnosis 172 



pathology 169 



prevention 173 



distribution 165 



figures 174,176, 178, 180 



investigation concerning 165 



lifehistory 168 



occurrence 168 



(Estrusovis 16, 17, 19,20,25,85 



description 25 



of larvae 26 



effects on sheep 27 



figures 34, 36, 38 



occurrence 30 



pathology „ 28 



treatment 31 



surgical 33 



Paper skin 185,201 



Parasites, abundance 9 



animal 17 



common to sheep and dog 14 



external, definition of 18 



destructiveness 22 



how sheep become infested 19 



length of time of development 20 



location 18 



of the skin 39 



seasonal appearance 21 



vegetable 17 



Parasitic diseases the chief source of losses 9 



Pastures, as a source of infection.... 13 



care of 13 



Pentastoma deniiculatum 69 



Pentastoma twnioidcs 69 



Phthiriasis 39,45 



Pneumonia, verminous 185, 186 



Paoroptes commwnis, var. oins 16, 17, 53, 56 



disease caused by 56 



diagnosis 57 



differential 59 



pathology 57 



prognosis..' 58,59 



source of contagion 58 



symptoms of 56 



treatment medicinal --- 60 



preventive 56 



figures 66, 68 



legislation concerning 64 



Purchasing sheep, examinations in 15 



