PAEASITIC DISEASES OF THE SKIN. 249' 



tary arsenical dips. It is well to use special precautions with 

 both, because of the danger connected with them. One of the 

 prominent manufacturers of dips, a firm which places on the 

 market both a powder arsenical dip and a liquid non-poisonous 

 dip, recently summarized the evils of arsenical dips in the fol- 

 lowing remarkable manner: 



"The drawbacks to the use of arsenic may be summed up 

 somewhat as follows: 



"(a) Its danger as a deadly poison. 



"(b) Its drying effect on the wool. 



"(c) Its weakening of the fibre of the wool in one particu- 

 lar part near the skin where it comes in contact with the tender 

 wool roots at the time of dipping. 



"(d) Its not feeding the wool or stimulating the growth 

 or increasing the weight of the fleece as good oleaginous dips do. 



"(e) The danger arising from the sheep pasturing, after 

 coming out of the bath where the wash may possibly have 

 dropped from the fleece, or where showers of rain, after the dip- 

 ping, have washed the dip out of the fleece on to the pasture. 



"(f) Its occasionally throwing sheep off their feed for a 

 few days after dipping, and so prejudicing the condition of the 

 sheep. 



"(g) Its frequent effect upon the skin of the sheep causing 

 excoriation, blistering and hardness, which stiffen and injure the 

 animal, sometimes resulting in death." 



"Although this manufacturer has gone farther in his attack 

 upon arsenic than this Bureau would have been inclined to do, it 

 must be remarked that when a maniifacturer of such a dip can 

 not speak more highly of the chief ingredient of this compound 

 than this one has done in the above quotation, his remarks tend 

 to discredit dips based upon that ingredient." 



