SHEEP SCAB. 
25 
The tar dips all did splendidly in destroying eggs. Zeno- 
leum was most used. In dilutions of one to 100 and one to 200 
it killed all. When diluted 400 times, only two hatched out of 
fifty-seven. In the proportion of one to 800, all hatched. 
Out of a total of sixty-eight eggs treated with Quibell’s 
Liquid Dip, only three hatched. Smaller numbers were dipped 
in Chloro-Naptholeum and Sulpho-Napthol and none hatched. 
Effects of Exposure on Hatching the Eggs — The effects of ex- 
posure on the hatching of the eggs may be summarized as fol- 
lows: 
Four eggs were out five days with the minimum tempera- 
tures ranging between 11.8 degrees and 24.8 degrees. None 
hatched. 
Thirteen eggs were out three days when the minimum tem- 
peratures ranged between 11.8 degrees and 24.5 degrees. Five 
hatched. 
Twenty-five eggs were out fourteen days, when the minimum 
temperature ranged between .1 degree and 34 degrees. None 
hatched. 
Six eggs were out twenty-one days when the minimum tem- 
peratures ranged between 12 degrees and 37 degrees. None 
hatched. 
Two eggs were out thirty-two days when the minimum tem- 
peratures ranged between — 5 degrees and 34 degrees. None 
hatched. 
Seven eggs were out thirty-five days when the minimum 
temperatures ranged between — 5 degrees and 34 degrees. None 
hatched. 
Six eggs were out one night when the temperature went 
down to — 9.8 degrees. None hatched. 
One egg out one night when the temperature went down 
to 15 degrees. Did not hatch. 
Five eggs were out eight nights when the temperature went 
to a minimum of — 11.8 degrees. None hatched. 
Three eggs were out a few nights (dates lost) when the 
temperature went to a minimum of 8.3 degrees. Two hatched. 
Four eggs were out a few nights (dates lost) when the min- 
imum temperature went down to — 5.3 degrees. None hatched. 
Do not understand that any of the eggs hatched while ex- 
posed to the cold. As soon as brought in the eggs were carried 
in a warm pocket, as before described. 
These experiments show that the eggs may be subjected to 
a temperature of 8.3 degrees and still hatch. Those subjected 
