. The Canadian farmer's manual of agriculture [microform] : the principles and practice of mixed husbandry as adapted to Canadian soils and climate : comprising: the field; produce of the farm; stock raising and management; manufactures of the farm; dairy; diseases of horses, cattle, sheep, pigs; farm buildings, modern machinery and implements : counsel to the immigrant-settler, Agriculture; Farms; Agriculture; Exploitations agricoles. Manual of J^ncuUure. 161 Its dirtiolution in watoi, owing to the piesctno of n largo propor- tion of .suli)Iiunc acid, is a rocessof
. The Canadian farmer's manual of agriculture [microform] : the principles and practice of mixed husbandry as adapted to Canadian soils and climate : comprising: the field; produce of the farm; stock raising and management; manufactures of the farm; dairy; diseases of horses, cattle, sheep, pigs; farm buildings, modern machinery and implements : counsel to the immigrant-settler, Agriculture; Farms; Agriculture; Exploitations agricoles. Manual of J^ncuUure. 161 Its dirtiolution in watoi, owing to the piesctno of n largo propor- tion of .suli)Iiunc acid, is a rocessof , reiiuir- ing from tour liiunln'd and Mfty to five hundred times its own wcij^ht of water, ll,'* [)urity varies in diti'erejit beds, and hence have not wt II agreed in their i- npoetive nnalytical re- ports. A ffoiul test of its purity is ohtained thus: Put the ground pow(kn' in nn iron pot ah)no, over the fire ; when it 'h»- conies heated it will give out a strong sulphurt'oiJs smell, accom- panied by a 'apid bubbling; if this ebullition is brisk, and the substance wni achnit of a straw in ing thi'Usi witheaso to the bot- tom, it may be considered pure. Tracjs of the of gypsum art' discerned in the writings of the ancients; but not until the last centviries were i(s proper- ties generally known in Europe At that time some ox[)eriments of its use were reported on by eminent (Jerman agriculturists to the Economical Society of Berne, in Switzerland, when it rapidly s|)read over that country, France, and many othei- |)arts of Europe. It was, however, in America that its merits became most ally recognized. Indeed, it was exported to Am* rica in iiw^G (juantities, ;ind from the Delaware; was convoyed us much as one hundred and fifty miles by hind carriage, until discovered in the State of New York. The stone, wlicn ground to powder, produces from twenty to twenty-five bushels per ton. Experiments were made in England of the relative values of [)laster s
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectagriculture, bookyear
