ISBN: 9781130336726

RareBooksClub.com. Paperback. New. This item is printed on demand. Paperback. 100 pages. Dimensions: 9.7in. x 7.4in. x 0.2in.This historic book may have numerous typos and missing text.… Mehr…

RareBooksClub.com. Paperback. New. This item is printed on demand. Paperback. 100 pages. Dimensions: 9.7in. x 7.4in. x 0.2in.This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1892 Excerpt: . . . siliceous matter or clay in its course to the sea. However this may be, it is certainly curious to note, taking the minimum results of these forty-eight analyses as representing the true amount of soluble silicic acid in river water, that we find it equivalent to 1 part of that body in 250, 000 to A solution of silicate of soda was neutralised with carbonic acid, and an amount of this solution equal to 1 grin, of soluble or colloid silicic acid added to 1 litre of sea-water. A comparatively small precipitate resulted, and was found to consist of silicic acid and silicate of magnesia, with traces of lime. The clear liquid filtrate from this precipitate remained for a very long period perfectly clear, and only deposited a slight additional precipitate after standing more than fourteen days. The silicic acid was determined in the filtrate, and it was found that the amount of the precipitate corresponded with the carbonate of magnesia or lime which occurred in the water. Thus if soluble silicic acid in any circumstances be added to sea-water, we should expect only that portion thrown out that would thus combine with the alkaline constituents of the sea-water, the amount of alkaline constituents being always enormously in excess over that in which silicic acid could exist either in surface or bottom water. t Loc. cit. , vol. i. pp. 76, 77. 400, 000 parts of water--figures curiously corresponding to those representing the minimum determinations of soluble silica in seawater by us (see Table I. ). As was stated above, there are no means at our disposal to explain the elaboration of silica from salts by organisms, as in the case of the secretion of carbonate of lime from other calcium salts, t Silicic acid, if present at all in the ocean in a soluble form, can only occ. . . This item ships from La Vergne,TN., RareBooksClub.com<

ISBN: 9781130336726

RareBooksClub. Paperback. New. This item is printed on demand. Paperback. 100 pages. Dimensions: 9.7in. x 7.4in. x 0.2in.This historic book may have numerous typos and missing text. Pur… Mehr…

RareBooksClub. Paperback. New. This item is printed on demand. Paperback. 100 pages. Dimensions: 9.7in. x 7.4in. x 0.2in.This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1892 Excerpt: . . . siliceous matter or clay in its course to the sea. However this may be, it is certainly curious to note, taking the minimum results of these forty-eight analyses as representing the true amount of soluble silicic acid in river water, that we find it equivalent to 1 part of that body in 250, 000 to A solution of silicate of soda was neutralised with carbonic acid, and an amount of this solution equal to 1 grin, of soluble or colloid silicic acid added to 1 litre of sea-water. A comparatively small precipitate resulted, and was found to consist of silicic acid and silicate of magnesia, with traces of lime. The clear liquid filtrate from this precipitate remained for a very long period perfectly clear, and only deposited a slight additional precipitate after standing more than fourteen days. The silicic acid was determined in the filtrate, and it was found that the amount of the precipitate corresponded with the carbonate of magnesia or lime which occurred in the water. Thus if soluble silicic acid in any circumstances be added to sea-water, we should expect only that portion thrown out that would thus combine with the alkaline constituents of the sea-water, the amount of alkaline constituents being always enormously in excess over that in which silicic acid could exist either in surface or bottom water. t Loc. cit. , vol. i. pp. 76, 77. 400, 000 parts of water--figures curiously corresponding to those representing the minimum determinations of soluble silica in seawater by us (see Table I. ). As was stated above, there are no means at our disposal to explain the elaboration of silica from salts by organisms, as in the case of the secretion of carbonate of lime from other calcium salts, t Silicic acid, if present at all in the ocean in a soluble form, can only occ. . . This item ships from La Vergne,TN., RareBooksClub<