A practical treatise on soluble or water glass, silicates of soda and potash, for silicifying stones, mortar, concrete, and hydraulic lime .. . tissue, which formsa link between the bark and the wood. The compo-sition of this sap varies according to circumstances,as the variety of the tree, climate, season-, ground,etc. The following are analyses of the sap : In 100 Parts. si z Albumen, Dextrin, Sugar, Resin, Galactin, Myricin, Antiarin, Organic Substance (not determined),. 0. 10 Potassa with Organic Acid, Carbonate of Lime, Extractive Matter and Salts, Water, 98^93 (a) Gluten
A practical treatise on soluble or water glass, silicates of soda and potash, for silicifying stones, mortar, concrete, and hydraulic lime .. . tissue, which formsa link between the bark and the wood. The compo-sition of this sap varies according to circumstances,as the variety of the tree, climate, season-, ground,etc. The following are analyses of the sap : In 100 Parts. si z Albumen, Dextrin, Sugar, Resin, Galactin, Myricin, Antiarin, Organic Substance (not determined),. 0. 10 Potassa with Organic Acid, Carbonate of Lime, Extractive Matter and Salts, Water, 98^93 (a) Gluten and Albumen, according to Solly, {b) Dextrin andSalt, (c) Water and Butyric Acid. Remarks.—The Cow Tree (Galactodendrort) is a native of theCordilleras of Venzuela; it famishes, by incision, an enormousquantity of a white, thick liquid, which has the taste and some ofthe qualities of real cows milk. The Antiaris belongsto tbe same family as the former—namely, to the nettle-worts, andit is singular that it furnishes a most deadly poison, which hasbeen the subject of the most harrowing stories. (Jussieu; Elementsof Botany.). SILIFICATION OF WOOD. 165 - Unfortunately we possess only one analysis of atree indigenous to North America; however, thesame tends to show that the amount of albumen, ifthe non-determined organic matter must be con-sidered as such, is exceedingly small, and with re-spect to the other trees, these analysis prove that thealbumen does not constitute the chief part among theingredients of the juice. How unjustifiable it is,therefore, to attribute, in every instance, the decay oftimber to the albumen present in the sap, as if it wasthe only substance liable to spontaneous decomposi-tion, or affording the vegetation of fungi and lichens !How unfounded is the assertion of Mr. Joseph , who, in an article on the preservation of tim-ber, states that wood is mainly made up of woodyfibre and a substance full of nitrogen ! (vide Work-ing Farmer, No
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Keywords: ., bookcentury1800, bookdecade1870, bookidpracticaltre, bookyear1870
