24 The Sheep- Scab. 



Australia and a man of much experience in 

 chemistry, writes : — 



" I should like to say a word to those who are 

 ready to praise the so-called non-poisonous pre- 

 scriptions. I say so-called, because there is 

 really no such thing. How can a non-poisonous 

 decoction destroy one of the most tenacious forms 

 of parasitic life? Taking the advantages and 

 disadvantages of poisonous and the so-called non- 

 poisonous dips, I am strongly in favor of the 

 poisonous compounds. I speak the words of 

 experience. I have dipped and had dipped 

 under my direction or supervision, thousands of 

 sheep with both kinds, and at all seasons of the 

 year. I. dip with a preparation of arsenic when 

 I am left to be guided by my own knowledge 

 and experience, and can truly say that I have not 

 had a complaint of any description; but I use 

 the so-called non-poisonous prescription for dip, 

 when requested to do so, and I find that sheep so 

 dipped require the operation ttvice to once of 

 the former." 



On the other hand, experience has taught the 



