540 Journal of the Department of Agriculture. — Dec, 1922. 



to move infected stock, tlie DeY)artmeiit had again to give concessions 

 in the Calvinia district on account of the drought; in such cases 

 every possible precaution was taken to prevent infection of clean 

 stock. But a larg-e namber of illegal movements took place, more 

 especially in the drought-stricken districts. The following statement 

 of stock received at the Johanuesbiirg and Maitland abattoirs shows 

 the number and peicentage of infection found, which compares very 

 favourably with the statistics of previous years. The improvement is 

 attributed mainly to the strenuous dipping campaign: — 



At Pretoria 1720 consignments comprising 167,172 sheep were 

 received, of which five consignments comprising 1,032 sheep were 

 infected. The inspector in charg-e of the Joha^uiesburg abattoirs 

 reports: — '"Very few consignments of ciean sheep arrived from 

 South-West Africa up to September, 1921. Since then a vast improve- 

 ment wns noticeable, large consignments arriving thoroughly dipjied 

 and cleatised. Since November, 1921, up to -JOth June, 1922, with 

 the exception of one consignment in January, all arrived clean." 



(/) Flocks Quarantined, 1921-22.— 



Compared with the previous year, there is a considerable reduc- 

 tion in the number of actually infected flocks, the total of local 

 infected flocks the previous year being 12,966, and introduced infected 

 flocks 2341. The contact flocks need not actually be infected, but 

 are quarantined and dipped as a precaution. 



(fj) Other Diseases. — Disquieting reports were received from 

 different parts or the Union oi floc]cs being badly infected with 

 Oesopliagostovium columhianiim or nodular worm. This disease is 



