JOURNAL OF AGRICULTURAL SCIENCE. Vol. IX. No. 4. 



PLATE XVI 



' W." Many miles of leats constructed to conduct water Irom one mine to another. The water often 

 overflows so that the land lower down the slope is poisoned and made worse than useless. 



'X." Field poisoned 30 years ago. Portion of field limed 8 years ago. Whole of field sown with 

 wheat, but crop grows on limed part only. See p. 393. 



