Note 205 — APPENDICES. STATISTICAL TABLES.

Note.—Series I contains the results of many years’ experience on a few farms. Series II comprises such estates, on the one hand, on which the area planted with wheat coincides with that manured, so as to justify the inference that the fields are manured precisely for the wheat crop; on the other hand, it includes such estates on which no fertilizing is practiced at all. Series II, as well as the great majority of the average yields which could be ascertained by one census, is distinguished from Series I in that it refers to no stated term of observation. The slight difference between, or rather the identity of, the averages in both series guarantees the validity of all the averages, though the period of observation be not stated.