Field Experiments on Swedish Turnips. 
327 
Composition of a Sample of Peruvian Guano used in Swede Experiments 
at Wohurn. 
Moisture 19- 10 
*Org<anic matter and ammoniacal salts .. .. 30 "05 
Phosphate of lime 26-13 
t Alkaline salts 13-32 
Insoluble siliceous matter 4-80 
100-00 
*Containin2; nitrogen 8-90 
Equal to amuiouia lO'Sl 
tCoiitaining phosphoric acid 4'42 
Equal to tribasic phospliatc of lime .. 9-05 
Toial percentage of phosphoric acid .. ]6-39 
Equal to tribubic phosphate of lime .. 35-78 
The Guano was a superior genuine Peruvian Guano. 
Compcsition of a Sample of finely ground Cambridge Coprolites used in 
the Sicede Experiments at Wobuni. 
Water and a little organic matter 4-93 
*Phosphoric acid 26-28 
Lime 44-55 
Oxide of iron, alumina, magnesia, fluorine,) 
carbonic acid, &c. f 
Insoluble siliceous matter 6-82 
100-00 
*Equal to tribasic jihosphate of lime .. .. 57-37 
Composition of a Sample of Dissolved Cambridge Coprolites used in the 
Swede Experiments at Wohurn. 
Moisture 8-96 
Organic matter and water of combination ., 9-53 
Monobasic phosphate of lime 17-80 
Equal to tribasic phosphate of lime (boneK.p-, .orr\ 
phosphate) rendered soluble by acid .. .. ■' 
Insoluble phosphates 7-80 
Sulphate of lime i 49-46 
Alkaline salts and magnesia } 
Insoluble siliceous matter 6-45 
100-00 
Composition of a Sample of fine Bone Meal used in the Swede 
Experiments at Woburn. 
Mo'sture 9-01 
•Organic matter 30-29 
Phosphate of lime 51-15 
Carbonate of lime, magnesia and alkaline) „ 
salts ^ »-01 
Insoluble sihceous matter 1-54 
100-00 
•Contnining nitrogen 3-54 
Equal to ammonia 4-29 
