219 



Page. 



Rabbits, not infested by parasites of sheep . '. 14 



Kanges as a source of infection 13 



Salting 13 



Scab 53 



general description of k '. 53 



insects-.,. 53 



life history 53 



white-washing and lye water .-. 12 



Sarcopteascahiei yar.ovis 53,54,56 



description 54 



disease caused by 54 



diagnosis , 56 



prognosis , 56 



source of contagion 55 



treatment 56 



Scleroatoma equinum 161,162 



Solerostoma hypostomum 16,145,167,168 



description 161 



figures. 164 



life history 161 



occurrence 161 



Sderosioma tetraeanthum 161,162 



Sheep grub (see CEstrus ovis). 



Sheep industry, value of 9 



Sheep louse (see Trichodeetea sphcerocephaVaa). 



red headed 45 



Skin, parasites of 39,45,49 



Sources of information, recognition of 23 



Species abundant in United States 16 



American and European compared 16 



described 17 



destructive 17 



not in United States 16 



of external parasites 16 



rare in United States 16 



Staggers (see Tcenia coenurus). 



Stomach round worms (see StrongyVua contortus). 



Strongylua oontortus 16,17,20,22,117,118,141,146,202 



description 141 



disease caused by 142 



treatment 142 



figures 144 



life history 141 



thelombriz disease 141 



Strongylua jOaria 16,17,20,21,185 



description. 201 



disease caused by 203 



duration - 203 



tracheal injections for 206 



treatment, medical 205 



preventive 202,208 



figures 210,212,214 



occurrence . 204 



