Range Sheep 143 
tests that all of the standard dips are effective in killing 
the ticks but the effect on the wool has not yet been dem- 
onstrated with sufficient certainty to justify any positive 
statements at this time. 
Dipping for scab, although the method of dipping is 
the same as that for ticks, is quite another problem. 
This is performed only when the disease is present or 
when the band has been exposed. Such dipping should 
be done at once under the directions of a competent man. 
When allowed to spread, sheep scab causes a great financial 
loss. These losses are caused by a decrease in production 
of wool, loss in weight and general condition of animals, 
and the death of large numbers of sheep. While this 
disease is severe and highly contagious, it yields readily 
to proper treatment. The state live-stock sanitary boards 
or the United States Bureau of Animal Industry usually 
take charge of the dipping for scab and all cases should 
be reported at once to the state or federal authorities. 
Lime and sulfur, nicotin, coal-tar-creosote and cresylic-acid 
are dips commonly used for scab. Dipping for scab is 
usually done twice at intervals of ten to fourteen days. 
The entire band should be dipped regardless of number 
bearing symptoms of the disease. The temperature of 
the bath should be 100° to 105° F. for lime and sulfur 
and nicotin dips and about 95° F. for the coal-tar-creosote 
and cresylic-acid dips. The sheep should be held in the 
dip for two to three minutes if the disease is not too ad- 
vanced and three to five minutes in bad cases. The 
sheep at dipping should have no cuts or sores, especially 
if lime and sulfur is used, as blood poisons may result. 
For this reason dogs that bite the sheep should be kept 
out of the corrals. 
Often some weak sheep may get dip in its lungs or be 
