22 FARMERS BULLETIN 798. 



enniig^li lime-sulphur paste should be cooked at one time to dip the 

 flock. The quantity of mixture in the cooking tank may be varied 

 at Avill, but the proportions of the various ingredients should not be 

 altered. 



To each 500 gallons of lime-sulphur solution prepared and diluted 

 as above directed add 4 pounds of arsenic ^ and 12 pounds of sal soda 

 made into a solution as follows: Put 12 gallons of water in a kettle 

 or tank, heat to boiling, and add 12 pounds of sal soda ; when this 

 has been dissolved add 4 pounds of powdered white arsenic, then 

 boil and stir for 15 minutes or longer, until the white arsenic has en- 

 tirely" disappeared. The quantity of arsenical solution prepared at 

 any one time is limited only by the capacity of the kettle or tank, 

 but the proportions of the ingredients should not be altered. The 

 arsenical solution should be added to the diluted lime-sulphur solu- 

 tion in the vat. When the arsenical solution is added a yellow- 

 colored flocculent precipitate is formed which remains in suspension. 

 The liquid in the vat should be well stirred before dipping opera- 

 tions are commenced. This dip can be used in any kind of water 

 without injury from the water, but there is no field test for its 

 strength. 



It should he rememhered that this dip is poisonous^ and due pre- 

 caution shovld he taken in handling and it sing it. The sheep should 

 be held in the draining pens and holding corrals until all surplus 

 liquid has drained from the fleeces. When the vat is emptied the 

 dip should be disposed of in such manner that the animals may not 

 have access to it. Preferably it should be run into an inclosed pit. 



INJURY FROM DIPPING. 



Dipping often results in a slight setback to the sheep. There may 

 be a temporary shrinkage in weight or constitutional disturbances, 

 or both. Various factors operate to produce these conditions. They 

 may occur with any of the standard dips, but should not always be 

 attributed to the effects of the dip alone. The age and physical con- 

 dition of the sheep, the method of handling the flock at the vat as 

 well as before and after dipping, the character of the Avater used, 

 the method of preparing the dip, and various other factors should 

 be considered before placing the blame on the dip. Young animals 

 in a thriving condition recuperate very rapidly from any temporary 

 ill effects; while old, weak, or emaciated animals succumb very read- 

 ily and regain lost weight slowly. Injury caused by dipping is more 

 likely to result from improper methods of dipping and handling 

 than from the direct effects of the dip. Rough handling of sheep 

 in the corrals and legging pens; dipping the flock immediately 



1 Farmers' Bulletin 603 contains directions for making arsenical dip. 



