for Twenty Years in succession on the same Land. 301 
Table XXXV. — Average Annual Produce and Increase by 275 Vos. Nitrate of Soda 
per Acre per Annum, alone, and with Mineral Manures. 
Four Years, 18G8-1871. 
MANURES PER ACRE, PER AifNUM. 
Average 
Annual 
Produce. 
4 Years, 
1868-71. 
Atebage Akkcal Increase. 
Plots. " 
2T5 lbs. Nitrate of Soda, 
without Mineral Manure, 
and 
with Mineral Manures as under. 
Over 
Mean 
Unmanured. 
Over 
corrospondiug 
Mineral 
Manures. 
Over 
corresponding 
Mineral 
Manures, 
and 200 lbs. 
Ammonia-salts. 
Dressed Corn per Acre — Bushels. 
1 AA 
Without Mineral Manure 
32 
16j 
3J 
2 AA 
46j 
30^ 
2Gf 
3 AA 
16| 
i 
4 AA 
Superphos. and Mixed Alkali-salts 
46^ 
30i 
25i 
4i 
Total Corn per Acre — ^Ibs. 
1 AA 
Without Mineral Manure 
1788 
903 
929 
187 
2 AA 
2691 
1806 
1577 
187 
3 AA 
18.52 
967 
858 
11 
4 AA 
Superphos. and Mixed Alkali-salts 
2692 
1807 
1498 
244 
Straw (and Chaff) per Acre — Cwts. 
1 1 AA 
Without Mineral Manure 
20J 
9? 
10 
3i 
2 AA 
Superphosphate of Lime 
28J 
18J 
3f 
3 AA 
2U 
11 
Hi 
4 AA 
Superphos. and Mixed Alkali-salts 
28i 
18i 
17 
2 
Total Produce (Corn, Straw, and Chaff) per Acre — lbs. 
1 AA 
2 AA 
3 AA 
4 AA 
Without Mineral Manure 
Superphos. and Mixed Alkali-salts 
4047 
5843 
4238 
5901 . 
2023 
3819 
2214 
3877 
2061 
3611 
2142 
3411 
596 
614 
268 
475 
Weight per Bushel of Dressed Corn — lbs. 
1 AA 
2 AA 
3 AA 
4 AA 
Without Mineral Manure 
Superphosphate of Lime 
" Mixed Alkali-salts" 
Superphos. and Mixed Alkali-salts 
53- 9 
56-4 
54- 4 
56'6 
0-1 
2-6 
0-6 
2-8 
0- 3 
1- 5 
-0-6 
1-3 
-O-l 
0-5 
-0-8 
-0-1 
Com to 100 Straw. 
1 AA 
2 AA 
3 AA 
4 AA 
Without Mineral Manure 
Superphos. and Mixed Alkali-salts 
80-6 
87-9 
78-4 
89-5 
0-8 
8- 1 
-1-4 
9- 7 
1-6 
-12-5 
-11-9 
- 3-1 
-7-7 
-7-4 
-9-6 
4-5 
