File:Water Supply and Irrigation Papers of the United States Geological Survey (1902) (14792881103).jpg

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Identifier: watersupplyirrig6571unit (find matches)
Title: Water Supply and Irrigation Papers of the United States Geological Survey
Year: 1902 (1900s)
Authors: United States Geological Survey
Subjects:
Publisher:
Contributing Library: Clemson University Libraries
Digitizing Sponsor: LYRASIS Members and Sloan Foundation

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res, and showing the shape of the poresin such a mass. of open space or porosity within the mass. The value of the porosityis shown to be independent of the size of the grains but dependentmerely upon the manner of packing. The minimum porosity of amass of spheres, or the porosity when the spheres are packed in themost compact manner possible, was shown to be 25.95 per cent of thewhole space occupied by the spheres. The maximum porosity that isprobable in a mass of spheres was shown to be 47.G4 per cent of thewhole space occupied. If a quantity of common shot be poured into a glass and the amountof open space between the shot be determined by measuring the Principles and conditions of the movements of ground water, by F. H. King: NineteenthAnn. Rept. U. S. Geol. Survey, Pt. II, 1899, p. 59. & Theoretical investigation of the motion of ground waters, by C. S. Slichter: Nineteenth Ann.Rept. U. S. Geol. Survey. Pt. II. 1899, p. 295. U. S. GEOLOGICAL SbRVE ATER-SUPPLY PAPER NO. 67 PL.
Text Appearing After Image:
SECTIONS OF WISCONSIN SANDSTONE.A, Red sandstone from Laville; B, brewn sandstone from Argyie Ilichthr.) THE LAWS OF FLOW. 21 Quantity of water required to fill the pores between the shot, it willbe found that the resulting porosity will be well within the limits just,given. It will also be found that the porosity will vary greatly ifdifferent methods be used in filling the glass, but that it is possibleto obtain the same porosity with small shot as with large shot. Thebores between the shot will be seen to be somewhat triangular inform, as shown in figs. 4 and 5, and they are both larger in diameterami shorter in length for a packing of spheres having a large porositythan they arc for a packing of low porosity. This v^vy important ele-ment in the transmission capacity of a soil the writer has attempted totake proper account of in the derivation of the formula given on page24. The individual grains in a mass of sand are not, of course,

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https://www.flickr.com/photos/internetarchivebookimages/14792881103/

Author United States Geological Survey
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Flickr tags
InfoField
  • bookid:watersupplyirrig6571unit
  • bookyear:1902
  • bookdecade:1900
  • bookcentury:1900
  • bookauthor:United_States_Geological_Survey
  • bookcontributor:Clemson_University_Libraries
  • booksponsor:LYRASIS_Members_and_Sloan_Foundation
  • bookleafnumber:560
  • bookcollection:clemson
  • bookcollection:americana
Flickr posted date
InfoField
29 July 2014



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