230 APPENDIX. 



8th of September, ripe seed capsules, with completely ripe seeds, were 

 obtained. On the 27th of October, the plants were removed from the 

 soil, and treated as above. 



TRIFOLIUM PRATENSE. 

 a. — In Pure Sand. 

 The clover, which appeared on the 5th of May, grew at first pretty 

 luxuriantly, but reached a height of only 3& inches by the 15th of Octo- 

 ber, when its leaves became suddenly brown, in consequence of which I 

 removed it from the soil, and treated it as above. 



b. — In Artificial Soil. 

 The clover reached a height of ten inches by the 15th of October ; it 

 was bushy, and its color was dark green. It was taken from the soil, in 

 order to compare it with the former experiments, and was treated in the 

 same way. 



CONSTITUENTS OF THE ASHES OF THE SEED. 



CONSTITUENTS OF THE ASHES OF THE PLANTS GROWN IN PURE SAND 

 AND IN THE ARTIFICIAL SOIL. 



Insoluble in water 



Soluble in Soluble in and muriatic acid 



water. muriatic acid. (Silica). Ashes 



iJjVl «w«'£ Insand • • °' 516 037 5 &**5 = 1026 



15 grins, plants, > In artificial soil n . 6y3 Q . 821 ft . 320 V8U 



dried in air . . j 



Jrt^j&l***  -° 123 ° 195 °- 355 = °- 673 



plants S Soil ' ' °" 167 °* 226 °' 487 = 0880 



Avena sativa, C Sand . . 216 0024 0354 afc 0*594 



13 grms. plants, \ Soil . . 0225 0030 0'461 = 0746 



f Sand ( , 12 ] 0-086 0-094 0045 = 0*225 

 Polygonum I grms. plants) ) 



fagopyrum . | Soil (12'7 gr. > Q . 22Q Q . m Q . 507 



I plants) . . \ 



L. .. r Sand (4 grms. ) Q . 223 . 252 . 031 __ . 506 



Nicotiana I plants) . . ) 



tabacum . . . 1 Soil 125 1 v14 q 2 . 228 . 549 ta 3 . 923 



^ plants) . . y 



Trifolium ' } gand _ ^ n . 522 Q . 35Q Q . QQl _ . g6S 



pratense, l-*«J> s n . • .0 659 0943 0082 ■■*-- 1'6S4 

 grammes plants ) 



