16 On Liquid Manure. 



7000 grains evaporated to dryness gave 11- 186 grains of dry 

 residue, and this reduced to ashes in a platinum capsule gave 

 9'127 grains of ash. 



We have thus in one imperial gallon : 



Grains. 



Water and volatile compounds 69,888-14 



Organic matters 20'59 



Mineral matters 91'27 



70,000-00 



Evaporated to dryness with hydrochloric acid a residue was 

 obtained which yielded on combustion with soda-lime 30*80 

 grains of nitrogen calculated per gallon. The residue obtained 

 by evaporation without acid gave 1'49 grains of nitrogen per 

 gallon. 



The ash of this liquid manure contained in 100 parts : 



Soluble silica 2-57 



Lime 12'58 



Magnesia 3'15 



Potash 18-54 



Chloride of potassium 3'01 



Chloride of sodium 44*21 



Phosphoric acid 5'30 



Sulphuric acid 4*32 



Carbonic acid and loss .. 6-32 



100-00 



An unexpectedly large amount of chloride of sodium having 

 been found in this analysis, and rather less potash than I ex- 

 pected, I caused fresh determinations of chlorine and the alkalies 

 to be made. In the first chlorine determination I obtained 28*27 

 per cent, of chlorine in the ash ; in the second 2 7 -90 per cent. 

 The second determinations of potash and soda likewise yielded 

 satisfactory results, for I obtained 18*63 of potash, 1*51 of 

 chloride of potassium, and 44*81 of chloride of sodium ; thus 

 proving that the ash of this liquid manure really contained the 

 amount of chloride of sodium and potash which is given in the 

 above analysis. 



The following numbers express the per cent, composition of 

 the solid matters : 



* Organic matter 18'40 



Inorganic matter 81*60 



100-00 



* Containing nitrogen 1 33 



Consisting of 



Soluble silica 2-09 



Lime .. 10'26 



