CONTENTS 



CHAP. PAGE 



INTRODUCTION . ,. . * . . . vii 

 I. WHAT WEEDS ARE, AND How THEY AFFECT OUR 



CROPS AND STOCK ...... i 



II. THE CLASSES OF WEEDS, AND How THEY ARE 



SPREAD . . . .... . . 18 



III. GENERAL PREVENTIVE AND REMEDIAL MEASURES 29 



IV. WEEDS OF ARABLE LAND . . *" . . 49 

 V. WEEDS AND THE IMPROVEMENT OF GRASS LAND . 138 



VI. WHAT ARE THE WORST WEEDS? OPINIONS OF 

 AUTHORITIES AS TO THE TWELVE WORST 



WEEDS IN VARIOUS DISTRICTS . * . 232 



VII. PARASITIC PLANTS 256 



VIII. POISONOUS PLANTS . . . . .276 



IX. WEEDS OF PONDS, RIVERS, AND DITCHES . .322 



X. WEEDS IN LAWNS, DRIVES, ETC 345 



XI. PRINCIPLES OF SEED TESTING . . . . 353 



BIBLIOGRAPHY . . .' / . . 372 



APPENDICES- 

 APPENDIX 1 378 



II. .... . . 384 



III. ... -409 



iv. . . 429 



V. . . 432 



INDEX .... 435 



