THE SOTJECES OF THE NITEOGEN OF VEGETATION, ETC. 
575 
August 17. — Shade full of vegetable matter. Wheat, Barley, Oats, and weeds grow- 
ing ; but Leguminous plants dead. 
September 7. — good deal of growth yet. 
October 5. — good deal of grass and weeds grovring. Cereals ripening. 
October 24.--— Shade full ; experiment stopped. Wheat not quite ripe. Barley and 
Oats dead ripe ; Beans and Peas all dead ; a little Clover still living ; some grass, and 
other weeds, green, and some seeded. The whole soil filled with roots, many distributed 
through the flints, and a large quantity growing in the pan under the pot. 
No. 16. — Buckwheat (1858); forty-two seeds (1 gramme); prepared soil; 
with nitrogenous manure. 
August 20. — Seed sown, and the pot placed over sulphuric acid, and covered with a 
glass shade. 
August 24. — Pot removed to its shade on the stand. Several plants up. 
September 7. — A pipette-ful of the sulphate-of-ammonia solution added (=0‘00359 
gramme N.). Plants growing well. 
October 5. — Second pipette-ful of the sulphate-of-ammonia solution added. Much 
more vigorous than the Buckwheat without ammonia (No. 7); about twenty plants; 5 
to 7 inches high ; four to six leaves on each. 
October 24. — Third pipette-ful of the sulphate-of-ammonia solution added. Growing 
well ; 5 to 7 inches high ; six plants in bloom. Comparing with No. 7, the influence 
of ammonia here is very marked, as showm in size, vigour, and maturation. 
November 22. — Plants taken up : — 
Twenty-four plants ; 4 to 7 inches high ; five to seven leaves on each ; six stems have 
flowered ; bloom gone oflF and rudimentary seed formed ; would probably have grown 
more but for frost. 
Roots less in proportion to upward growth than with Buckwheat without ammonia ; 
none deeper in the soil than 1^ to 2 inches; slim, delicate, and but little distributed. 
Sod loose and porous. 
Preparation and analysis as described at pp. 543, 544. 
No. 17 (1858). — Plants gkown with Niteogenous Manuee in M. G. Ville’s Case. 
The same descriptions of pot, pan, soil, ash, &c., were used for these experiments as 
for the others, as explained at page 565. Plants as under: — 
Wheat, four seeds ; Barley, fmr seeds ; Oats, four seeds ; Beans, three seeds. 
June 29. — Seeds set, and the pots placed over sulphuric acid, and covered with a glass 
shade. 
July 5. — Pots removed to M. Ville’s Case. 
July 14. — A pipette-ful of the sulphate-of-ammonia solution given to each pot 
(— 0'004 gramme N.). Wheat, four plants just appearing; Barley, three plants 1^ inch 
MDCCCLXI. 4 I 
