508 IOWA DEPARTMENT OF AGRICULTURE. 



lime and sulphur dips should not be selected. A tobacco and sulphur dip, 

 as well as many of the better proprietary dips, can be made without the 

 necessity of lengthy boiling and should be given preference whenever 

 facilities for boiling are not at hand. 



The length of the ivool is discussed under the head, "Lime and sulphur 

 dips." 



The Pastures — In case it is necessary to place the dipped sheep on 

 the same pastures they occupied before being dipped, it is always best to 

 use a dip containing sulphur. If a proprietary dip is selected under 

 those circumstances it is suggested that sulphur be added, about 1 pound 

 of flower of sulphur to ever 6 gallons of dip. In case it is possible to 

 utilize fresh pastures after dipping, the use of sulphur is not so necessary, 

 but is always advisable. The object in using sulphur is to place in the 

 wool a material which will not evaporate quickly, but will remain there 

 for a longer period of time than the scab parasites ordinarily remain 

 alive away from their hosts. By doing this the sheep are protected 

 against reinfection. 



KINDS OF DIPS. 



Sulphur is one of the oldest known remedies for scab. As a scab 

 eradicator it must be placed among the best substances at our disposal. 

 It is one of the constituents of certain proprietary dips, but its use to the 

 farmer is best known in the tobacco and sulphur dip and in the lime 

 sulphur dip. These home-made mixtures, as already shown, are the two 

 dips which have played the most important roles in the eradication of 

 scab from certain English colonies, and their use, especially the use, as 

 well as the abuse, of lime and sulphur, is quite extensive in this country. 



THE TOBACCO AND SULPHUR DIP. 



The formula, as given here and as adopted by the New South Wales 

 sanitary authorities, appears to have first been proposed in 1854 by Mr. 

 John Rutherford. Regarding its success in Australia, Dr. Bruce, chief 

 inspector of sheep for New South Wales, makes the following statements: 



"On the Hopkins Hill Station Mr. Rutherford, with two dressings of 

 these ingredients, then cured over 52,000 sheep which had been infected 

 for eighteen months; and he also subsequently cured with two dippings 

 the sheep on Mount Fyans Station, where they were in a most wretched 

 state, and had been scabby for more than three years, and that, too, in 

 both cases, without destroying a single hurdle or yard or removing any of 

 the sheep from their old runs. Since then millions of scabby sheep have 

 been permanently cured in Victoria in the same way and in South 

 Australia and New South Wales hundreds of thousands of scabby sheep 

 have also been cleaned with tobacco and sulphur. In fact, this dressing 

 has the credit of having eradicated scab from the flocks of both the latter 

 colonies, and there are good grounds for asserting that had this remedy 

 not been known and used neither colony would be, as they both are now, 

 almost entirely free from the scourge. Judging, therefore, from the ex- 

 perience of the three colonies, there is no medicant or specific yet known 

 that can be compared with tobacco and sulphur as a thorough and 

 lasting cure for scab in sheep." 



