Agricultural news . ited States in 1916 repre-sented about 10,000 short tons of pure potash, with a netvalue at point of shipment of at least $3,500,000. This isten times the value of the production reported for 1915, butthe figures submitted by many of the producers representonly a start made towards the end of 1916. The potash produced in 1916 was derived from thefollowing sources:— Mineral sources.—Natural salts or brines, 3,850 shorttons; alunite and silicate rocks (including furnace dustrecoveries), 1,900 short tons. Qrijanic .sowrcts. —Kelp, 1,100 short tons; pearlash(mostly from hardwoo
Agricultural news . ited States in 1916 repre-sented about 10,000 short tons of pure potash, with a netvalue at point of shipment of at least $3,500,000. This isten times the value of the production reported for 1915, butthe figures submitted by many of the producers representonly a start made towards the end of 1916. The potash produced in 1916 was derived from thefollowing sources:— Mineral sources.—Natural salts or brines, 3,850 shorttons; alunite and silicate rocks (including furnace dustrecoveries), 1,900 short tons. Qrijanic .sowrcts. —Kelp, 1,100 short tons; pearlash(mostly from hardwood ash), 220 short tons; miscellaneousindustrial waste, 1,750 short tons. The largest output comes from the Nebraska alkali lakes,but the natural saline deposits elsewhere are beginning tomake important contributions. The production of potashfrom organic sources is about half that from mincTal recovery of potash from pearlash is an old-establishedindustry. 108 THE AGRICULTURAL NEWS. Apkil 0, 1918. %. GLEANINGS. The /hdiii A/c//<v Uur/d for February 1, IJLS, statesthat the worlds total production of crude rubber of allgrades is estimated at about 210,.500 tons, an increase ofnearly 40,000 tons on the previous crop. The rubber plan-tations in the Far Kast are responsible for about 80 per the \\orld3 total present production. It is gratifying to learn from authoritative sources, saysthe Dominica Chronkle, March 9, 1918, that the plaiiting ofground provisions has of late been carried out on a veryappreciable scale. As one travels in the country districtsnumerous new provision gardens are observed on all sides,whilst many of those which were already in existence havebeen considerably enlarged. As the result of a series f)f experinnnts with liurnDgen(bacterized peat) in the treiitment of beans and mustard,the conclusion was reached that nitrogen, supplied in an-active form like nitrate of soda, has been more cfieciive thanthe same amount of nitrogen suppl
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