i6 
SHEEP SCAB. 
were a few cases, only, of rather mild scab among these sheep. 
On the second day after dipping, one sheep was found with a 
few living but apparently sick mites. Since that time no scab 
has developed in any of the pens containing these sheep. 
Three sheep known to have some scab when first dipped 
were kept out at the second dipping, and one of these on 
January 8 was found to have a small spot of live scab near 
the old patch of moderately heavy scab. The other two cases, 
which were rather mild, were entirely cured by the one treat- 
ment. 
All my experiments seem to indicate that this dip kills 
slowly but quite surely. Moderately bad cases were in some 
instances entirely cured by once dipping, while others broke out 
again. The dip is a pleasant one to use but is rather expensive. 
I hope to test it further. 
SKABCUKA DIP. 
Laboratory Experiments — November 3, mites Avere dipped in this prep- 
aration in twice the recommended strength. 
Sixteen honrs after, seA^en mites AA^ere actiA^e and about an equal 
number (not counted) seemed dead. At the end of forty-eight hours only 
four mites remained active. 
Another lot was dipped on the same date in the recommended 
strength of this dip. Sixteen hours after, all seemed perfectly active. 
After fifty-six hours many Avere still active. No count was made. 
This dip seemed much more effectual Avhen applied to sheep. 
Experiment on Sheep — On November 10, one sheep with 
moderately heavy scab was dipped with this preparation. 
A lock pulled from the sheep twentj^-four hours after, gav<^^ 
four dead and ten active mites. 
Another lock, taken forty-eight hours after treatment, gave 
ten apparently dead and nineteen active mites. On November 
13 only a very few living mites could be found on this sheep, 
and on the 16th of the same month I w^as unable to find any, and 
none have appeared since. 
My early laboratory experiments with this dip were so un- 
promising that I dropped it to take up dips of more promise, 
but in following through the effects of the dip on the one 
sheep treated, it seems that the effect of Skabcura is much 
like that of Black Leaf, namely, having a cumulative effect, ex- 
tending over a number of days. This dip seems to me to prom- 
ise well. 
