J 



O ON THE FOOD OF PLANTS. 



the quartz sand. This plant, like the fomer, lived, looked 



fresh, and in January 1797 weighed \ ounce, 

 clay and char- No. 7 had brickmaker's clay, with about i part charcoal 



» in powder. In January 1797 the plant weighed J ounce. 



clay and rags, No. 8 had brickmaker's clay and woollen rags. This 



plant cabbaged well, and in January 1797 weighed 4 ounces, 

 c,lay and lim«, No. 9 had brickmaker's clay, with about ^ lime. The 



plant lived till December, but never grew, 

 sand and No. 10 had clean dung from the bowels of a horse, with 



horse-dung, q llar t z sand well washed. This plant dropp'd some of its 



largest leaves during the frost; and yet in January 1797 it 



weighed 4| ounces. 

 peat-earth, No. 11 had peat earth alone ; the plant continued healthy 



to appearance, and in January 1797 weighed ~ ounce, but 



the root was rotted off. 

 & rich mould. 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 4 ounces. 



Such was the result of these experiments on cabbage 



plants. 

 Wheat sown, 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. 

 in sand, No. 1, with quartz sand alone, had two stems, 23 inches 



long, and the ears 1£ inch, 

 sand and rags, No. 2, the sand and rags, had four stems, 28 inches long, 



and the ears 1\ inches. 

 ?and and char- No. 3, the sand and charcoal, had one stem, 18 inches 

 c0 *!> long, and the ear 1 J inch. 



sand and lime, No. 4, the sand and lime, had two stems, 21 inches long, 



and the ear % inches. 

 c \iy t No. 5, the clay alone, had three stems, 27 inches long, 



and the ears l£ inch. 

 clay and sand, No. 6, the clay and sand, had four stems, 25 inches long, 



and the ears 2f inches, 

 clay and char- No. 7, the clay and charcoal, had four stems, 24 inches, 

 c °a), an d the ears 2 inches. 



«!ay and rags, No. 8, the clay and rags, had twelve stems, 33 inches 



long, and the ears 2| inches, 



^ T o, 



