Front Matter
p. 0
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Some Effects of Plant Growth-Regulating Substances on Microorganisms
Trigg, Carol; Stahly, Grant L. pp. 49-55
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Some Features of the Tributaries to Lake Superior in Northeastern Minnesota
Ver Steeg, Karl pp. 56-65
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Removal of Sodium from Biologic Menstruums by Calcium Zeolites
Gordon, George B.; Weitzner, Herbert A.; Bernard, Robert D. p. 65
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Lygaeidae Collected in Western Texas, with a New Lygaeospilus from California
Barber, H. G. pp. 66-68
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Book Notices
p. 68
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Holoconops in the Western Lake Erie Region (Diptera: Heleidae)
Boesel, M. W. pp. 69-72
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The Instars of Phymata and Sinea (Phymatidae, Reduviidae: Hemiptera)
Balduf, W. V. pp. 73-78
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Honoring Professor William A. Starin
p. 78
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Wind Directions
Carlson, Fred A. pp. 79-81
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New Genus and Species of Cerambycidae with Notes (Coleoptera)
Knull, Josef N. pp. 82-83
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Some Algae from the Black Hills of South Dakota and the Turtle Mountain Region of North Dakota
Taft, Clarence E. pp. 84-88
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Back Matter
p. 999
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