282 Report of Experiments on the Groiotli of Barley, 
respectively. As before, the produce is, for easy comparison, given 
in pounds, and that of the wheat is averaged over the whole 28, 
the first 20, and last 20 years. 
Table XXVIII. — Average Annual Produce of Wheat, and of Barley, 
by 14 tons Farmyard Manure per Acre, per Annum. 
Average Annual Pkoduce, &c. 
First 
Half of 
I'erioA 
Second 
Half of 
Period. 
Total 
Period. 
Second 
Period over 
(or under — ) 
First Period. 
Barley over (or under — ) 
Wheat. 
First 
Half of 
Period. 
Second 
Half of 
Period. 
Total 
Period'. 
Total Com, per Acre. 
Wheat :— 
lbs. 
lbs. 
lbs. 
Percent. 
lbs. 
lbs. 
lbs. 
28 years, 1844-1871 
1953 
2335 
2144 
19-6 
588 
660 
624 
20 years, 
1844-1863 
1757 
2395 
2076 
36-3 
784 
600 
692 
20 years, 
1852-1871 
2145 
2385 
2265 
11-2 
396 
610 
503 
Barley: — 
20 years, 
1852-1871 
2541 
2995 
2768 
17-9 
Straw (and Chaff), per Acre. 
Wheat : — 
28 years, 
1844-1871 
3332 
3801 
3567 
14-1 
-348 
-454 
-402 
20 years. 
1844-1863 
3071 
3960 
3515 
28-9 
- 87 
-613 
-350 
20 years, 
1852-1871 
3795 
3803 
3799 
0-2 
-811 
-456 
-634 
Barley : — 
20 years, 
1852-1871 
2984 
3347 
3165 
12'2 
Total Produce (Corn, Straw, and Chaff), per Acre. 
Wheat :— 
28 years. 
1844- 
1871 
5285 
6136 
5711 
16-1 
240 
206 
222 
20 years, 
1814- 
-1863 
4828 
6355 
5591 
31-6 
697 
- 13 
342 
20 years, 
1852- 
-1871 
5940 
6188 
6064 
4-2 
-415 
154 
-131 
Barley : — 
20 years. 
1852- 
1871 
5525 
6342 
5933 
14-8 
The produce of wheat as well as of barley was considerably 
higher over the later than over the earlier years ; but the rate of 
increase was very much less over the last 20 than over the first 20 
of the total 28 years. It may be mentioned here, in passing, that, 
in only 4 of the 28 years has the produce of wheat-grain been 
higher on the dunged than on any of the artificially manured 
plots, namely, in 1855, 1859, 1866, and 1871 ; and in every 
year it has been surpassed in weight of straw, and of total pro- 
duce (corn and straw together), on one or more of the artificially 
manured plots. 
