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Alfred, L.R. and E.S. Takle. Spectral analyses of precipitation data for Iowa and Kansas. 255

Fasehun, F.E. and J.C. Gordon. Difference in growth response to light intensity by Populus x euramericana clones. 265

Ellis, C.J. Syringeal histology. VI. Icteridae: red-wing, Agelaius phoeniceus and bobolink, Dolichonyx oryzivorus. 271

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Pohl, R.W. Eragrostis contrerasii, a new grass species from Central America (Gramineae: Chloridoideae) 323

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