131 
be obtained a supply of manure on tbe before-mentioned 
plan. Turnips have been grown as a second crop by Mr. 
Addeman, of Almholme, near Doncaster, after stubble oats, 
averaging 14 tons per acre ; by Mr. Dickenson, of Par- 
tridge Hill, near Finningley ; and Mr. East, of Bawtry, of 
eight or nine tons per acre; and are constantly grown around 
Carlton on the Trent after white crops, which is a sufficient 
proof that our climate can effect this object. Indeed there is 
no more difference between the climates of our southern 
counties and those of Belgium, than between the north and 
south parts of England. According to Humboldt, there is 
only one degree of difference upon the ichole year, and not 
quite one degree in the autumn, between London and Brus- 
sels, the season most upon which the ripening of the second 
crops depend. 
The temperatures of London, Brussels, and Amsterdam, 
as ascertained by Baron Humboldt, are as follows, and will 
give an approximation of the difference of climates. 
Mean tempera- 
Coldest Month. Warmest Month. ture of the year. 
London 37.76 64.40 50.36 
Brussels 35.60 67.28 51.80 
Amsterdam 35.42 66.92 51.62 
MEAN TEMPERATURE OP WINTER, SPRING, SUMMER & AUTUMN. 
Winter. Spring. Summer. Autumn. 
. London 39-56 48.56 63.14 50.18 
Brussels 36.68 53.24 66.20 51.08 
Amsterdam 36.86 51.62 65.84 51.62 
Concerning the two remaining beds, the red marl and 
gyysum, and the Pontefract rock of Smith, little need be 
said. The upper red marl and gypsum has been described 
as a zone of wet land at the base of the escarpment of the 
upper limestone bed; every square inch of which requires 
deep draining and subsoil ploughing. Subsoil ploughing was 
suggested as an improvement of the lands of Owstone, As- 
