34 FARMERS BULLETIN "113. 



having- a Hre box under each. All large plants should have steam 

 boilers of not less than 25 horsepower. The live steam can be piped 

 into the dipping vat and used for maintaining the temperature of 

 the dip and also into the cooking and heating tanks for boiling the 

 dip or heating water. The steam pipes should extend along the 

 floor of the vat at least two-thirds of the length and be provided 

 with openings for the escape of the steam into the dip. The supply 

 pipe from the settling tank should enter the vat above the dip line 

 in order that any leak may easily be detected. 



CARE OF PLANT WHEN NOT IN USE. 



A dipping plant that does not receive proper care vrnen not in use 

 deteriorates very rapidly. The pressure of the ground against the 

 sides of the vat tends to cause them to bulge iuAvard; this tendency 

 may be counteracted to some extent by keeping the vat full of liquid. 

 Wooden vats which are allowed to stand empty, dry out, and the 

 lumber shrinks so that the vat will leak when refilled. At the close 

 of dipping operations the vat should l)e left full of liquid and water 

 added from time to time to restore that lost by evaporation. 



A week or 10 days prior to beginning dipping operations the 

 entire plant should be overhauled, and put in good condition. Be- 

 fore charging a new vat or one which has stood empty for some time, 

 it should be filled with water to ascertain whether it leaks. 



CONSTRUCTION OF DIPPING PLANTS. 



Plans for the construction of cement and wooden sheep dipping 

 plants are shown in figures 20 and 21. They are not drawn to a 

 uniform scale, consequently, in studying the drawings the scale of 

 each part should be noted. The plants as shown have no superfluous 

 equipment and the arrangements are as simple as is consistent with 

 efficiency. The size of the plant can be increased or decreased as 

 desired. A different corral, chute, and legging pen arrangement are 

 shown with each vat. All parts are interchangeable and are suitable 

 for use with either vat. Cross fences as desired can be added to the 

 corrals. Cutting chutes are shown in both plans, as every large dip- 

 ping plant should have such a chute equipped with a dodge gate so 

 the laml)s may be cut out and dipped separatel3^ 



If permanent pipes are used for conducting water and dip to the 

 vat they should be so laid as not to act as an obstacle to the men 

 working along the vat. There should be no obstructions to the path 

 along both sides of the vat. The pipes can be placed under the 

 ground or a portable V-shaped trough can be used for conducting 

 liquids into the vat and laid aside when not in use. 



