558 MR. J. B. LAWES, DR. GILBERT, AND DR. PUGH ON 
13 inches, and beans 1] inches high. Wheat and barley much branched at the base, 
giving fourteen stems from the six seeds; all a deep green colour. Beans deep green, 
and growing well, excepting that one has a few black specks on the lower leaves. So 
much growth that the plants are considerably crowded in the shade. 
July 4.—Much crowded. Graminacez 20 inches, Leguminose 15 inches high. The 
former growing as well as in the open air. The latter appear to suffer from crowding; 
their lower leaves dying. 
July 12.—The Graminacee growing very healthily ; Leguminose apparently not so. 
July 22.—The Graminacee growing vigorously ; Leguminosz revived, and also grow- 
ing vigorously at the top. During the last few days they have been protected from the 
direct sun by a sheet of paper tied round the shade. 
July 29.—Four barleys in head; wheat not so advanced, but nearly as high; the 
beans had again suffered, but one is recovering. Too much crowded. 
August 10.—About as at last date. 
August 24.—About as at last date; barley slowly ripening. 
The object of the experiment being attained, which was to determine whether the 
conditions of atmosphere were suited to healthy growth, provided the soil supplied 
sufficient nutriment, no further records of growth were made. 
II. Puants Grown nv 1858*. 
As in the experiments of 1857, so in those of 1858, the plants grown may be divided 
into two Series, as under :— 
Series 1. With no other combined Nitrogen than that contained in the seed sown. 
Series 2. With a supply of known quantities of combined Nitrogen beyond that con- 
tained in the seed. 
The notes of growth of the plants grown without any extraneous supply of combined 
nitrogen are given first, and then those of the plants grown with such supply. As 
before, in several experiments instituted with Leguminous plants they died before 
attaining a sufficient amount of growth to render it of any use to analyse the products. 
The records of their progress, such as it was, are, nevertheless, shortly given. 
No. 1.—Wheat (1858) ; eight seeds; prepared soil; without nitrogenous manure. 
(See Plate XV. fig. 4.) 
April 27.—Seeds set, and the pot placed under a shade over sulphuric acid. 
May 7.—All the plants up; the pot removed to its shade on the stand. 
May 20.—Kight plants; all of a healthy green colour; seven 4 inches high, one just 
above the soil. 
* The figures (Plate XV-) of the plants grown in 1858 are reduced from drawings taken, in most cases 
not many days before the plants were taken up. ; 
