The advantages that would arise from the cultivation of these roots, upon a small part of every strong-land-farm throughout the kingdom, must be obvious. Calculations might be given that would astonish and almost exceed the belief of most readers. Such calculations, however, in general, are but little attended to, and it is thought better to omit them, hoping that enough has been said upon the subject, to fix the attention of every person interested in the cultivation of land.
APPENDIX.
Workington Hall, Cumberland,
March 9, 1814.
Sir,
I had the pleasure of receiving your obliging favour last night, with two copies of the publication on Mangel Wurzel. I have cultivated that root for some years with success. From the Bishop of Derry I learnt to apply the leaves to soiling my milch cows and pigs. The leaves of a good crop are from 10 to 15 tons per acre. I have steeped the seed and mixed it with sand previous to sowing, by which means it vegetates immediately. I have had 60 tons per acre on 3 feet stiches, 9 inches between the plants, and have kept the roots good till the middle of May. I have given the seed to many of my cottagers, who have grown the roots for their pigs, and they have found them to answer well.
I am, &c.
J. C. Curwen.