E.—lo.

Productive Manure. (Manufactured in Dunedin). Analysis.

• Containing nitrogen, 0-42 ; value per ton, £2 Is. 6(3. t Containing nitrogen, 1-09 ; value per ton, £2 4s. 6d. This manure is advertised with the following analysis:— Free moisture ... ... ... ... ... 14 per cent. Combined water and organic matter (containing nitrogen equal to 16 „ 3-87 per cent, of ammonia) Dry sulphate of lime ... ... ... ... 30 „ Soluble phosphate of lime (equal to 10-7 of insoluble phosphate) B'l „ Insoluble phosphate of lime ... ... ... ... 6 Carbonate of lime... ... ... ... ... 8 „ Sulphide of lime ... ... ... ... ... 2 „ Slaked lime ... ... ... ... ... 1-9 „ Potash salts ... ... ... ... ... 2 „ Earthy matter (clay, sand, &c.) ... ... ... 13 „ 101 The manure may have been prepared with the best intention of producing an article similar to that of which the analysis is published, but the effect of caustic lime (probably gas-lime) used in its preparation has been to reduce the phosphates and liberate the nitrogen. It may be again mentioned that the presence of caustic lime is incompatible with the existence of either monocalcic phosphate or nitrogen. Soot, L.N. 253. Analysis. A fair sample of soot. Moisture... ... ... ... 7-55 Organic matter ... ... ... 39-15, containing nitrogen, 2-10. Silica ... ... ... ... 39-14 Ferric and aluminic oxides ... ... 5-73 Calcic oxide ... ... ... 3-16 Phosphoric anhydride ... ... 042 Sulphuric „ ... ... 2-50 Alkalies, &c. ... ... ... 2-35 100-00 Value, £1 15s. per ton. Mixed Manure, L.N. 254. A combination of soot, vegetable-matter, sand, and bonedust. Analysis. Moisture ... ... ... ... 10-5 Organic matter ... ... ... 31-6, containing nitrogen, 2-30. Silica ... ... ... 31-1 Tricalcie phosphate ... ... ... 18-4 Calcic carbonate ... ... ... 7'l Alkalies, &c. ... ... ... 1-3 100-00 Value, £2 17s. per ton. Bonedust, L.N. 973. This manure was sold as a bonedust, but from its analysis it is shown to be adulterated with about one-fifth its weight of carbonate of lime. Probably Chesterfield guano has been added.

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ioratory 830.* o. ioratory 831-t )rganic matter and moisture ... Silica and insoluble matter /[onocalcic phosphate )icalcie phosphate ... ?ricalcic phosphate ... !alcic sulphate and aluminic phosphates !alcic carbonate 'otash joss and undetermined 32-88 7-86 Nil Nil 13-53 22-77 3-20 15-66 0-25) 3-85 j 26-90 14-46 Nil Nil 14-17 14-75 28-83 0-89 10000 100-00