Experiments tvit/i different Top-Dressinys upon Ulicat. 19 
Moisture ]2-3r, 
*Or<;anic niattor, ammoniacal salts, and water of conil)iiiatiou '12-?>^ 
Bi-piiosphatc of lime 
Equal to bone-earth reudercd soluble (4'54) 
Insoluble phosphates (bone-earth) (>'97 
Sulphate of lime (anhydrous) 20-8i) 
Sulphate of magnesia 
Chloride of sodium (common salt) '^4'70 
Nitrate of soda 4-()3 
lusohible siliceous matter (sand) 3'93 
100-00 
*Containing nitrogen 3 .38 
Equal to ammouia 4' 10 
Plot II. — Top-dressed with Peruvian guano, produced: — 
cwt. qrs. lbs. 
Corn, Head 5 3 23 
„ Tail 0 0 13 
G 0 8 
Straw 8 1 6 
Cavings 0 1 5 
Chafif ,.. 0 1 20 
Produce per acre : — 
Corn (head and tail) 46 bushels 6 lbs. 
Straw (including cavings and chaff) 1 ton 16 cwt. 12 lbs. 
The guano used in this experiment was genuine Peruvian of 
superior quality, as will be seen by the following analysis : — 
Moisture 17-03 
*Organic matter and ammoniacal salts .. .. 52-04 
Phosphates of lime and magnesia 19-61 
Alkaline salts 10-55 
Containing phosphoric acid (1-22) 
Sand -89 
100-12 
*Containing nitrogen 14-94 
Equal to ammouia 18-14 
Plot III. — Top-dressed with nitrate of soda, produced : — 
cwt. qrs. lbs. 
Corn, Head 5 3 23 
„ Tail 0 0 13 
6 0 8 
Straw 9 0 1 
Cavings 0 0 21 
Chaff 0 1 3 
Produce per acre : — 
Corn (head and tail) 44 bushels 10 lbs. 
Straw (including cavings and chaff) 1 ton 17 cwt. 3 qrs. 16 lbs. 
A few days after the application of the nitrate of soda the plant 
assumed a more intensely greeii colour, and for a long time after- 
wards the effects of the nitrate were plainly shown bv this colour 
h 2 
