THE SOURCES OF THE HITEOGE^S" OF VEGETATION, ETC. 
557 
Roots by no means so abundant as those of Wheat with ammonia-salt ; only a few 
fibres extended through the hole at the bottom, or to the sides of the pot. 
Preparation and analysis as described at pp. 543, 544. 
No. 10. — Beans (1857); two seeds; preimred soil; intended to have nitrogenous manure. 
June 9. — Only one plant up ; 2 inches high ; turning black and obviously dying. 
For particulars of taking up, setting fresh seeds and recommencement of the experi- 
ment, see remarks made on June 9 to Bean No. 5, p. 552. 
June 15. — Not yet up. 
June 24. — Two plants just appearing. 
July 4. — Two plants well up and growing; leaves just opening. 
July 11. — Two plants; 6 to 8 inches high; leaves deep green. 
July 22. — Green, healthy, and vigorous. 
July 29. — Nearly as at last date, but somewhat declining. 
August 10. — Obviously dying. 
August 24. — Dead. 
The season too far advanced to repeat this experiment. 
No. 11. — Beans (1857); two seeds; jgrepared pumice; intended to have nitrogenous manure. 
June 9. — One up ; slender ; black spots on the leaves ; obviously unhealthy. Taken 
up, and the experiment recommenced ; for particulars of resetting, &c., see remarks to 
Bean No. 5 of this date, p. 552. 
June 15. — Not yet up. 
June 24. — Two plants just up. 
Jtdy 11. — Apparently not gomg to grow. 
July 22. — Dead; the season too far advanced to repeat this experiment. 
No. 12. — JJVieat, Barley., and Beans (1857); Wheat and Barley three seeds each, Beans 
two seeds; in rich Garden soil. (See Plate XV. fig. 13.) 
May 18. — Seeds of wheat, barley, and beans, all sown together in a single pot of 
good garden soil, and placed under a shade (No. 12), to be supplied with washed 
air, &c., just as in the other experiments. The seeds germinated well. 
May 28-29. — During the night, owing to a leakage of water from the reservoir into 
the vessel A (see description at p. 476 et seq., and Plate XIII.), it passed over into the 
sulphuric acid and carbonate of soda wash-bottles, and the mixed liquid passed into the 
shade to the depth of some inches, and destroyed the experiment. 
May 30. — Plants from seeds which had been set at the same date as the foregoing, 
were transplanted into a fresh pot of garden soil, which was placed under the shade, 
and the experiment recommenced. The wheat and barley plants were about 5 inches, 
and the beans about 4 inches high. 
June 15. — Healthy, and growing vigorously. 
June 24. — Three wheats, three barleys, and two beans. Wheat 14 inches, barley 
