The variations and ecological distribution of the snails of the genus Io . .02 .0 Degree of 7 ,12 .17 Equality in Per Cent Plate 25 Spine Index Average of NOLICHUCKY, FRENCH BROAD,TENNESSEE RIVERS. Height of Spines Distance Between Spines Groups 19-27 NOLWHUCKY Group /9 ^^.^^^.H\jroup 20 mnf/t////»t//f////- FRENCH BROADGroup 21 -,^»^m„0m,,^t^ rSNAJ£SS££ Group 22. Group 23 <w%<vs»vw»Group 2U Group 25 _____ . Group 26 up 27 .47 .52 S ? ^rpd/^/-r/7Ce, c/e/ 650EDO550500450 m 350 300 250 200 ;jl50 I 10 feioo c Plate 22 Spine: Index Average of ^^^^ °^ 5^ Distance Between Spines POWELL RIV
The variations and ecological distribution of the snails of the genus Io . .02 .0 Degree of 7 ,12 .17 Equality in Per Cent Plate 25 Spine Index Average of NOLICHUCKY, FRENCH BROAD,TENNESSEE RIVERS. Height of Spines Distance Between Spines Groups 19-27 NOLWHUCKY Group /9 ^^.^^^.H\jroup 20 mnf/t////»t//f////- FRENCH BROADGroup 21 -,^»^m„0m,,^t^ rSNAJ£SS££ Group 22. Group 23 <w%<vs»vw»Group 2U Group 25 _____ . Group 26 up 27 .47 .52 S ? ^rpd/^/-r/7Ce, c/e/ 650EDO550500450 m 350 300 250 200 ;jl50 I 10 feioo c Plate 22 Spine: Index Average of ^^^^ °^ 5^ Distance Between Spines POWELL RIVER J H; / \ 3 Group Group /. .Group 2 .Group 3. .Group 4. .Group 5. , 3 1-5 // ^ f X // / \/y \ X ? »-? // // V / -A-f ^\ ^^1 I X / J- ^ \ V \ XXX 1 / f f \ V \ X i* - 1 1 \ \ \ X \x 1 0 7 45 ^ r< ^^ ?^ 4 5 .0 2 Degr .07 J2 .17 ^2 .27 .3 :e of Equality in Per Cent. 2 Z7 AZ .47 .52 .5 7 .62
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Keywords: ., bookcentury1900, bookdecade1910, bookpublisherwashingtongovtprin
