82 PLANT DISEASE 



of manure. I have seen one that was quite 

 fifteen feet high. This may appear like an 

 exaggeration, but seeing is believing, and one 

 can understand what an exhaustion of the soil 

 must have taken place to produce such a mass. 



Dr. Edington and Veterinary-Surgeon Soga 

 both say there is something deficient in the 

 herbage. Is it not likely that this deficiency 

 has been brought about by exhaustion through 

 the mimosa and the mineral constituents de- 

 posited in the kraal heaps, and which would be 

 of much more value on the veldt, of which I 

 think there is no question ; then there must be 

 a corresponding deficiency in the blood and 

 tissues of the animals eating this food. This 

 will also account for the similar internal ap- 

 pearance of animals suffering from various 

 diseases all grazing on approximately the same 

 pasture. 



In other words, the same deficiency in the 

 veldt produces the same deficiency in all the 

 animals feeding on it. 



This view of the case is further confirmed 

 by a cablegram appearing in the Westminster 

 Gazette as this book goes to press which reads 

 as follows 



