By Mr. Thomas Smith. 



31 



The charcoal dust ought to be kept quite dry, which is 

 easily done by placing it in a round heap, and covering it 

 closely over with turf, until it is wanted. 



I have also found that the application of charcoal dust 

 effectually prevents the clubbing in the roots of Cabbages, 

 &c. I had been accustomed to use lime fresh from the kiln 

 for that purpose, and always with considerable advantage, 

 but since I have made use of the charcoal dust upon different 

 quarters of the garden, and any of the Brassica tribe has been 

 subsequently planted there, the clubbing has entirely dis- 

 appeared. In 1822, I planted a quarter with Cauliflower 

 plants which never arrived at maturity, being very much in- 

 jured with the club. In the spring of 1823, I had the same 

 quarter prepared for Onions, with charcoal dust upon it ; as 

 soon as the Onions were cleared off in October, I had it well 

 dug over, and planted it immediately with early Cabbages, 

 which all arrived at maturity early this last spring, without 

 the least appearance of clubbing. 



I remain, 

 your obedient humble servant, 

 Thomas Smith. 



Woolsington, near Newcastle upon Tyne, 

 July 18, 1824. 



