THE 



ENEMIES TO AGRICULTURE, 



BOTANICAL AND ZOOLOGICAL; 



BEING A BRIEF ACCOUNT OF 



THE WEEDS, 



QUADEUPEDS, BIRDS, INSECTS, AND WORMS, 



WHICH ARE 



mJURIOUS TO THE FARMER, 



WITH THE BEST MEANS OF 



THEIR EXTIRPATION OR DIMINUTION, 



BY 



JOHN DONALDSON, 



PROFESSOR OP AGRICULTURE AND BOTANY AT HODDESDON, HERTS. 



LONDON: ROBERT BALDWIN. 



1847. 



