396 POISONING OF CATTLE BY FEEDING ON PASPALUM DILATATUM ^ 



effect of the fire on the grass roots. Heavy stocking at the 

 commencement of summer before the flowering season will be 

 found to be effectual. By this means the formation of flower- 

 ing heads is prevented and infection of the pasture is rendered 

 impossible. 



In the outbreak at Cedara, which involved a herd of young 

 oxen, a number of deaths from red-water occurred after 

 recovery was almost complete. The grazing ground on which 

 these animals ran was red-water veld, but as the animals had 

 been reared in the area, and as no cases occurred in cattle of a 

 similar age grazing in adjoining camps, it was considered that 

 the mortality was due to a breakdown in immunity resulting 

 from lowered vitality due to ergot intoxication. The absence 

 of abortion in pregnant animals contracting the disease under 

 natural conditions, and also of any symptoms of necrosis or 

 sloughing, was noted in the outbreaks reported and investigated. 

 The condition does not give rise to any immunity or distaste for 

 the fungus, and animals again allowed access to lands in 

 which the infection is present during the same or succeeding 

 year will develop all the characteristic symptoms. 



STAR STREAMS. 



By H. E. Wood, M.Sc, F.R.Met.S. 



(Title only.) 



THE SOILS OF THE PRETORIA DISTRICT. 



By B. de C. Marchand, B.A., D.Sc. 



(Title only.) 



ON SOME PHYTOGEOGRAPHICAL BOUNDARIES IN 

 THE COUNTRY BETWEEN THE GREAT FISH 

 RIVER AND VAN STADEN'S MOUNTAINS. 



By Prof. S. Schonland, M.A., Ph.D., F.L.S. 



(Title only.) 



SOME NOTES ON THE DISTRIBUTION OF THE. 

 GENUS ALOE IN SOUTH AFRICA. 



By I. B. Pole-Evans, M.A.. D.Sc, F.L.S. 

 (Title only.) 



