The manures were as follows : 



Plots i, S, 15 eai-h \v;is manured with i^ cwt. of nitrate of soda 

 as a top dressing in three instalments of 56 Ibs. each. 



[Mots 2, 9, 16 each was manured with i^ cwt. of nitrate of soda 

 at one time. 



Plots 3, 10, 17 each received 2 cwt. of potassium nitrate in one 

 instalment. 



Plots 4, n, 18 each received i cwt. of sulphate of ammonia in 

 one instalment. 



Plots 5, 12, 19 each received i cwt. of chloride of ammonia in 

 one instalment. 



Plots 6, 13, 20 each was manured with 24 tons of farmyard 

 manure in October (for wheat), and September (for potatoes and 

 clover) they did not receive any dressings of artificial manures. 



Plots 7, 14, 21 received no artificial or farmyard manure. Each 

 plot of land (except Nos. 6, 7, 13, 14, 20, 21) received 12 tons of 

 good farmyard manure in the month of October (for wheat), and 

 September (for potatoes and clover). 



WHEAT CROPS. 



Plots Nos. i to 7 had previously grown root crops, and each 

 was sown in the month of November with six pecks of good wheat. 

 The following are the results : 



POTATOES. 



Plots Nos. 8 to 14 had previously grown oats ; on each plot 

 were set 7 cwt of potato tubers. The following are the results : 



