Preventive measures. —Good cultivation, alternation of crops 
and destruction of weeds afford the only means of successfully 
combating the disease, which fortunately does not attack cereals. 
Beetroot Tumour. 
(Urophylictis leproidet, P. Magn.) 
This disease was first observed attacking beetroot growi: 
grounds of the School of Agriculture, Roniba, near Algiei 
The disease is characterised by the presence of one 
brain-like outgrowths c ' 
