tment with alkaline and acid solvents in
the cold such as to remove all cell contents. This residue is described
as 'permanent tissue.' The observations were carried out through two
growing seasons--1894-5--which were very different in character, the
former being rainy with low temperature, the latter being abnormal in
the opposite direction, i.e. minimum rainfall and maximum sunshine. The
barley selected for observation was that of two experimental plots of
the Royal Agricultural Society's farm, one (No. 1) remaining permanently
unmanured, and showing minimum yield, the other (No. 6) receiving such
fertilising treatment as to give maximum yields.

The numerical results are given in the annexed tables:

Table Headings:

A: Date
B: Age of Crop
C: Plot
D: Dry Weight
E: Furfural p.ct. of dry weight (a)
F: Permanent tissue p.ct. dry weight
G: Furfural from permanent tissue
H: P.ct. of tissue
I: P.ct. of entire plant
J: Ratio a : c

BARLEY CROP, WOBURN, 1894.

________________________________________________________________________
| | | | | | | | |
| | | | | | | [G] | |
| | | | | | |_____________| |
| | | | | | | | | |
| [A] | [B] | [C] | [D] | [E] | [F] | [H] | [I] | [J] |
|_________|__________|_____|______|______|______|______|______|__________|
| | | | | | | | | |
| May 7 | 6 weeks | 1 | 19.4 | 7.0 | 53.4 | 12.7 | 6.8 | 1.03 : 1 |
| | | 6 | 14.7 | 7.0 | 55.9 | 10.3 | 5.7 | 1.23 : 1 |
| June 4 | 10 weeks | 1 | 17.6 | 7.7 | 52.9 | 11.6 | 6.1 | 1.26 : 1 |
| | | 6 | 13.5 | 8.1 | 58.5 | 13.4 | 7.8 | 1.04 : 1 |
| July 10 | 15 weeks | 1 | 42.0 | 9.0 | 65.7 | 9.8 | 6.4 | 1.40 : 1 |
| | | 6 | 32.9 | 10.6 | 65.7 | 12.5 | 8.2 | 1.30 : 1 |
| Cut | 21 weeks | 1 | 64.0 | 11.9 | 70.0 | 14.5 | 10.1 | 1.18 : 1 |
| Aug. 21 | | 6 | 64.6 | 13.4 | 70.5 | 15.0 | 10.6 | 1.26 : 1 |
| Carried | 22 weeks | 1 | 84.0 | 12.7 | 75.0 | 16.5 | 12.4 | 1.02 : 1 |
| Aug. 31 | | 6 | 86.4 | 12.4 | 78.4 | 15.1 | 11.8 | 1.05 : 1 |
| |
| BARLEY CROP, WOBURN, 1895.