On the Food of Plants. 319 
No: 9. had brickmaker’s clay, with about.1-20th lime, 
The plant lived till December, but never grew. 
No. 10. had clean dung from the bowels of a fiat with 
quartz sand well washed, This plant dropped some of its 
largest leaves during the frost, and yet in January 1797 it 
weighed 41 ounces. 
No. 11. had peat earth alone: the plant continued healthy 
to ‘appearance, and in January 1797 weighed half an ounce, 
but the root was rotted off. 
No. 12. was planted at the same time in the garden, near 
the pots, in rich mould: this did not drop any leaves, and 
in January 1797 weighed four ounces. 
Such was the result of these experiments on cabbage plants. 
In January 1797, having removed the cabbage plants, I 
sowed wheat in the same pots; and 25th September of the 
same year I made the subsequent report : 
No. 1, with quartz sand alone, had two stems 23 inches 
long, and the ears 12 inch. 
No. 2, the sand and rags, had four stems 28 inches long, 
and the ears 24 inches. 
No.3, the sand and charcoal, had one stem 18 inches 
long, and the ear 13 inch. 
No. 4, the sand and lime, had two stems 21 inches Tong, 
and the ear 2 inches. 
No. 5, the clay alone, had three stems 27 inches long, | 
and the ears 13 inch. 
No. 6, the clay and sand, had four stems 25 inches long, 
and the ears 24 inches. 
No. 7, the clay and charcoal, had four stems 24 caaiies, 
_and the ears two inches. 
No. 8, the clay and rags, had twelve stems 33 inches 
long, and the ears 24 inches. 
No. 9, the clay and lime, bad one stem, very slender, 15 
inches, and the ear 12 inch. 
No. 10, the dung and sand, had sixteen stems 37 inches 
long, and the ears 2% inches, very strong. 
No. 11, the peat earth, had six stems 35 inches long, and 
the ears 24 inches. 
Thus, 
