91 



Mr. Dove on Experiments with Manures on Potatoes. 



Jfote. — Tho last column in this table was deduced from the experi- 

 ments of Mr. Michelmore and Mr. Watson, made in the University 

 Laboratory.— R. D. T. 



TABLE IL 

 Es^perimenU on Potatoes with Manures over dung, each plot J Imperial 



Acre. 



The column on the right side is the value of the increased produce, 

 calculated at 10s. a boll, Renfrewshire measure, or 40s. a ton — a Ren- 

 frewshire boll of potatoes being exactly 5 cwt. 



TABLE in. 

 Experiments on Wheat at Ershine, 1842, per \ Imperial Acre. 



XXVI. — Results of Experiments with Manures on Potatoes. 

 By Mr. Dugald Dove, Nltshill.* 



The field in which the following experiments were made was furrow- 

 drained about eight years ago ; had been cropped for a long series of 

 years, and was in poor condition. The upper soil is a sandy loam, 



* This paper forms the result of a successful competition for a premium of £5, offered 

 by John Wilson, Esq., of Aucheneadcn, to the Renfrewshire Agricultural Society. 



