TABLE 47. — Wheat grown for 51 Years in succession on the same Land. 

 Kesults showing the effects of exhaustion, and of manure-residue. Quantities 

 per acre. Produce : Dressed Grain in bushels. 



AVERAGES. 



1 Average of 5 years, 1S60-64 inclusive. 2 Average of 11 years, 1865-75 inclusive. 



^Average 20 years— first 13 years with mixed mineral and 172 lb. nit. per annum, last 7 years unmanured. 

 * Average 20 years—first 12 years unmanured, last 8 years mixed mineral and 86 lb. nit. per annum. 



