Page ix-xi: Illustration numbers have been added to the List of Illustrations. The smaller illustrations have been added to the list, with a descriptive caption added where that was not present in the book.
Page 2: ... it was not introduced into those counties ... changed to ... it was not introduced into those countries ....
Page 34: ... to snow the result ... changed to ... to show the result ....
Page 62: Numerous animal and plant parasite ... changed to Numerous animal and plant parasites ....
Page 98: ... four year prior to writing ... changed to ... four years prior to writing ....
Page 132, last table row: buckweat changed to buckwheat.
Page 153: closing quote mark added after ... corn silage and alfalfa. and after ... have never before looked quite so well.
Page 164: closing quote mark added after ... that in value approaches alfalfa.
Page 202: ... facing page 231 ... changed to ... facing page 230 ....
Page 257: Paragraph break inserted before Farmers Guide says: ....