literature. The latter condition is termed the " in- terests of workers | 11 ‘9 Area sown. 6:9 Draught animals 15:2 17:3 31:3 28-5 49°5 47°7 11-7 | 14-4 8-8 | 11-2 Belgium 6-1 4°5 5:0 5-0 5:0 Holland 2-8 24 2-0 3:2 3:3 Germany ; 8-5 6-8 4°7 37 9:9 Czechoslovakia n 1:8 12 2'5 2:6 Greece 0-9 I-4 2-0 2°3 207 Egypt 1:0 me) 0:9 1-0 1:2 | r8 | r6 15 -30 | 43,364 [1,092,880] 28-6] 95:2 I-I 2:2 1:5 30 -60 | 22,552 |1,063,144] 27°38] 93:6 | I-4 3°4 1:6 60 -120| 4,039 | 387,216] IO-I] 91-2 | 0-6