184 THE KITCHEN-GARDEN. [chap. vi. 
duced before 1548* but from what country is 
unknown. They are both of the easiest 
culture, and will not only grow in any soil or 
situation, but may even be raised for the 
table by spreading the seed in a saucer on 
wet flannel. The flour of mustard is made 
from the ground seeds of the black mustard, 
which is cultivated extensively in some parts 
of England for that purpose. 
Corn Salad or Lamb Lettuce , Winter Cress, 
Burnet, Tansey , and many other plants are 
occasionally used in salads, particularly on 
the Continent, but they are seldom grown for 
that purpose in England. 
Celery is frequently used in salads; and it 
is interesting, as being so greatly improved by 
cultivation as scarcely to be recognized; for 
in its w T ild state it is a British plant called 
smaliage, which grows in ditches, and is 
scarcely eatable. In gardens, celery requires 
more manure than any other vegetable, except 
the cabbage tribe. The seed for the princi¬ 
pal crop of celery is generally sown in 
March or April, and the seed-bed should be 
formed of equal parts of fresh dark loamy 
soil, and old rotten dung. When the plants 
