220 PROCEEDINGS OF THE CHEMICAL DEPARTMENT. 



10. The Phosphates are used in such quantity as to supply 

 112 lbs. soluble phosphoric acid, the sulphate of ammonia and 

 glue, 56 lbs. of ammonia, and the muriate of potash 56 lbs. 

 potash per acre, but when the two latter are used together, the 

 quantity of each is reduced to one half. Penman and Bolivian 

 guanos are used at the rate of 7 cwt. per acre. 



11. The manures for the 1st series are as follows : — 



1. Dissolved Coprolites and Sulphate of Ammonia. 



2. „ Guano and do. 



3. „ Coprolites and Glue. 



4. „ Guano and do. 



5. „ Coprolites and Muriate of Potash. 



6. „ Guano and do. 



7. „ Coprolites with Sulphate of Ammonia and 



Muriate of Potash. 



8. „ Guano and do. 



9. „ Coprolites, Glue, and Muriate of Potash. 



10. „ Guano and do. 



11. „ Coprolites alone. 



12. „ Guano alone. 



13. „ Muriate of Potash alone. 



14. Nothing. 



12. The manures for the 2d series are : — 



1. Dissolved Coprolites and Sulphate of Ammonia, 



2. „ Guano and do. 



3. Peruvian Guano. 



4. Bolivian Guano. 



5. Dissolved Coprolites and Muriate of Potash. 



6. „ Guano and do. 



7. „ Coprolites with Sulphate of Ammonia and 



Muriate of Potash. 



8. „ Guano and do. 



9. Peruvian Guano with Muriate of Potash. 



10. Bolivian Guano with Muriate of Potash. 



11. Dissolved Coprolites alone, 



12. „ Guano alone. 



13. „ Muriate of Potash alone. 



14. Nothing. 



13. The manures are sent out in small sacks, each of which 

 contains the quantity required for a single plot. To the mouth 

 of each sack is attached a metal label with two numbers upon it; 

 the upper refers to the series of experiments, the lower to the 

 number of the plot as given above ; and as the plots are all in 

 duplicate, there are in every case two sacks with the same 

 number. 



14. Arrange the bags in the order of the plots. 



15. Have ready several large stoneware basins (milk basins 



