ERRATA. 
On page 215 the following corrections should be made in table 6, in the column 
giving “Weight of straw and grain:” 
Line. 
1, instead of 23 read 22. 
2, instead of 23 read 22. 
3, instead of 24 read 23. 
7, instead of 31 read 30. 
9, instead of 17 read 13. 
10, instead of 33 read 34. 
11, instead of 29 read 28. 
12, instead of 24 read 23. 
13, instead of 15 read 14. 
17, instead of 20 read 19. 
18, instead of 25 read 24. 
19, instead of 32 read 31. 
431 
