122 
If, as is more usually the case, the turnips and seeds are eaten 
off, £. 
Turnip crop 85 
Barley crop 
Seeds, 1 J qr. of rape dust, if even eaten off 45 
Total 120 
If he has no sheep, and has open fallows, and mows his seeds. 
Barley crop, 2 to 2^ qrs 60 
Seeds mown 
Wheat crop, 2J qrs 75 
Total 135 
The greatest of the sums paid for manures on 100 acres, is 
£190, and the least £120, and the average will be £150 for 
every 100 acres, or 30s. per acre. So that over the whole 
area of 33 miles long, and 3^ broad, there will be the enor- 
mous sum of £100,000 paid annually for these articles ; that 
is supposing the whole area under the regular four-course 
system. It is also to be recollected that the bones and rape 
dust used by the farmer are (the greatest proportion of them) 
imported from foreign countries. In 1838 the official value of 
bones, as given me by Dr. Holland, was £255,967. In 1839? 
£224,342, and the quantity of rape dust is not less, so that 
nearly £500,000 is paid to foreigners for manure annually. 
It may then be asked what suggestion can be made for 
remedying this extravagant mode of obtaining manures. I 
answer, first, in the collection of those manures which have 
been proved to be the most valuable, and the keeping of stock 
to produce them. And second, in the just application to the 
plants which require them. 
The application of manures to particular crops, presup- 
poses a knowledge of the constituent elements of both : this 
subject, which I shall only just notice, may be learnt from 
the tables : for example, if the plants to be raised abound in 
mucilaginous or saccharine matter, as potatoes, peas, turnips, 
