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File:Report of the Commissioner for the year ending June 30, 1903 (1905) (14762412091).jpg

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Description
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Identifier: reportofcommissi001903 (find matches)
Title: Report of the Commissioner for the year ending June 30, 1903
Year: 1905 (1900s)
Authors: United States Comission of Fish and Fisheries
Subjects:
Publisher:
Contributing Library: Clemson University Libraries
Digitizing Sponsor: LYRASIS Members and Sloan Foundation

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oric acid. No. 2. Blackish gray, gritty, rather coarse,sandy, cohesive, fibrous with plant remains,molluscan shells sparse, yielding much gasin hydrochloric acid. No. 3. Bluish clay, blotched with buff,hard and coherent, almost no grit, few plantremains, little gas in hydrochloric acid.After the action of acid a granular sedimentremains composed apparently of quartzgrains. The experiment shows that soilNo. 1 supports the most growth, soilNo. 2 next, and soil No. 3 the leastgrowth. The same relation holds forCliara as for Vallisneria. The rela-tive size of representative plantsfrom each of the three aquaria isshown in figures 3, 4, and 5. Theplants were pressed and mounted,the photographs being taken fromthe herbarium sheet. Chara being difficult to subject to linear measurement, (he air-dryweight of the 10 plants in each case was taken, and this gives a fairindex of the relative amount of growth in each soil. In No. 1 it was2.175 grams; in No. 2, 1.345 grams; in No. >. 0.650 grams.
Text Appearing After Image:
Fig. 3.—Vallisneria spiralis after 5; weeksgrowth in loamj soil (No. 1). 506 EEPORT OF COMMISSIONER OF FISH AND FISHERIES. The result for Vallisneria is just what was expected, but iu the caseof Chara it was thought that since it is of more frequent occurrence in the sandy soil, perhaps it wouldmake a better growth in Mo. 2 thanin No. 1. It is quite possible thatthis plant is unable to hold posses-sion of the soil of its choice becauseof the interference from other species.It does occur infrequently along withVallisneria in the loamy soil, makingexcellent growth there, and since ex-periment shows this soil to be morefavorable than that in which it fre-quently occurs, we might suppose thatit is crowded out from places other-wise suitable for it. Looking to the mechanical analy-sis as shown above for explanationof these results, it is difficult to finddifferences indicating those proper-ties which are determining factors inthe amount of growth a given soilwill sustain. A chemical anal

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https://www.flickr.com/photos/internetarchivebookimages/14762412091/

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Volume
InfoField
XXIX
Flickr tags
InfoField
  • bookid:reportofcommissi001903
  • bookyear:1905
  • bookdecade:1900
  • bookcentury:1900
  • bookauthor:United_States_Comission_of_Fish_and_Fisheries
  • bookcontributor:Clemson_University_Libraries
  • booksponsor:LYRASIS_Members_and_Sloan_Foundation
  • bookleafnumber:558
  • bookcollection:clemson
  • bookcollection:americana
Flickr posted date
InfoField
28 July 2014

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