EXPERIMENTS ON THE MIXED HERBAGE OF PERMANENT MEADOW. 393 
Table XXIX.—Produce of Hay per acre on selected plots. Average of the 20 years ; 
produce of 1869, the year of highest productiveness; produce of 1870, the year of 
lowest productiveness ; difference of each from the average ; and difference of the 
one from the other. 
Plot 7. 
Plot 9. 
Plot 11. 
Plot 14. 
Plot 3. 
Mixed 
Mixed mineral 
Mixed mineral 
Mixed mineral 
Umnanured, 
mineral 
manure, and 
manure, and 
manure, and 
Means. 
continuously. 
manure, 
400 lbs. 
800 lbs* 
550 lbs. 
al one. 
ammonia-salts. 
ammonia-salts. 
nitrate soda. 
lbs. 
lbs. 
lbs. 
lbs. 
lbs. 
lbs. 
Average 20 years, 1856-1875 . 
2383 
3958 
5711 
6726 
6407f 
5037 
1869 . 
4256 
6124 
7700 
8610 
8526 
7043 
1870 . 
644 
1968 
3306 
5150 
6300 
3474 
/1869 . 
+ 1873 
+ 2166 
+ 1989 
+ 1884 
+ 2119 
+ 2006 
+ oi civoitiijo x 2870 
-1739 
-1990 
— 2405 
-1576 
- 107 
-1563 
1870-1869 . 
1 _ 
-3612 
-4156 
-4394 
-3460 
-2226 
-3569 
The next Table (XXX.) shows some of the meteorological conditions under which 
the two very different crops were grown. The particulars are given—for each of the 
12 months from July to June separately, and for series of months collectively, for the 
average of the 20 years, for 186S-1S69, and for 1869-1870. The variations of each 
of the two seasons + or — the average, and the variations of 1869-1870, the year 
of lowest produce, + or — 1868-1869, the year of highest produce, are also given. 
* 400 lbs. only in 1859, 1860, and 1861. 
t Average of 18 years only, 1858-1875. 
3 E 
MDCCCLXXX. 
