Report of the Meeting of the British Association for the Advancement of Science Volume 35. British Association for Meeting
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Author: British Association for Meeting
Number of Pages: 348 pages
Published Date: 01 Mar 2012
Publisher: Rarebooksclub.com
Publication Country: Miami Fl, United States
Language: English
ISBN: 9781130951615
File size: 29 Mb
Download Link: Report of the Meeting of the British Association for the Advancement of Science Volume 35
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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. 1866 Excerpt: ... the difference in the produce obtained from the plots treated with these manures was so slight--only 19 lbs. to the acre--that they may be re garded as having yielded the same results. In referring to these experiments, it must be remembered that the season of 1884 was exceptionally dry, though the drought was not so great in Scotland as it was in England. The results obtained, however, are valuable as representing the produce obtainable in a dry season; and as a similar series of field experiments are being made this year in the same district, an opportunity will be obtained for contrasting the results for both years. On Esparto Fibre, or Spanish Grass, and its Employment in the Manufacture of Paper. By Dr. Stevenson Macadam, F.R.S.E., F.G.S. During the last three years large quantities of a grass obtained from Spain have been employed in this country in the manufacture of paper. Delivered in Great Britain, it costs about 5 10s. to 8 per ton. The recent high price of rags has caused a demand for esparto fibre; and should it continue, other countries, as Barbary, which yield the same grass will no doubt contribute largely to the supply. The chemical composition of an average sample is--moisture, 9-62; oil, 123 albuminous compounds, 5-46; ligneous fibre, 56-28; starch, gum, and sugar, 22-37; ash, 5-04. In the manufacture into paper, the material, first carefully cleaned, is subjected to the action of caustic soda. The fibre, however, is rather short in nature, and hence paper entirely made of it is extremely liable to tear. It is customary, therefore, to give strength by mixing the pulp from esparto fibre with the pulp from rags, commonly in the proportion of equal parts. The paper so manufactured is largely employed as a printing paper, and the...
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