1918. J CONTENTS. Ill 



Page, 



Selective permeability and the plasma membrane, Davidson 523 



Influence of incomplete solution on photosynthesis, Gruzit and Hibbard 523 



Studies in the physiology of the fungi V, Duggar et al 524 



Formation of organic growths by electrolytic action, Lillie *. 524 



A comparison of mitochondria m plant and animal cells, Cowdry 524 



[Galactosidase (3 in the vegetable kingdom], Mougne 524 



The cause of growth in the hypocotyls of pat seedlings, de Vries 525 



The department of plant physiology, Livingston 525 



The sexual cycle in plants, Bessey 525 



The hormone theory of chromosome action, Bessey 525 



Hybrids of Zea tunicata and Z. raniosa, Collins 525 



A Hauea botanical vocabulary, Dalziel 525 



FIELD CROPS. 



The overhead electric discharge and crop production, Blackman and Jorgensen. 525 



Aerial electrical discharge and increased yields 526 



Electro-cultiu-e 526 



[Observations on vegetative growth of cereals], Chaianov and Ustinovskil 526 



Xenia and other influences following fertilization. Waller 526 



Report of the department of agriculture, Barbados, 1915-16, Bovell 526 



gi'ield crops], Mackenna 526 



eport of the Bugyi experimental plat for the year 1915-16, Thompstone 526 



Report of the Hmawbi A^ricultm-al Station for the year 1915-16, McKerral 527 



Report of the Tatkon Agricultural Station for the year 1915-16, McKerral 527 



Field crops work at Koilpatti Agricultural Station], Sampson and Thomas 527 



Field crops work at Manganallur Agricultural Station], Sampson and Thomas . 527 



Report of field crops work in Dutch East Indies], Van Breda De Haan et al. . 527 



Winter grains, Parsons 527 



Varieties of wheat and other cereals 528 



Fodder grasses, Java, Backer 528 



The grasses of Ohio, Schaffner 528 



Studies of leguminous plants, Gangulee 528 



Plants producing fibers analogous to that of kapok, Michotte 529 



Marine fiber, Winterbottom 529 



The identity of fiber Agaves, Dewey 529 



Alfalfa management, Sheehan 529 



Cassava experiments, de Verteuil 530 



Influence of soil temperature upon seedling corn, Halsted and Wakaman 530 



Inheritance of a mosaic j^ericarp pattern color of maize, Hayes 531 



The relation of cob to other ear characters in corn, Grantham 532 



Variety tegta of corn. Winters and Hall, jr 532 



Salting soft corn, Hughes 532 



Inheritance of the number of teeth in the bracts of Gossypium, Harland 532 



Inheritance of oil in cotton, Humbert 533 



Cotton varieties in Georgia. — Variation of oil content and resistance, Rast 533 



History, development, and botanical relationship of Egyptian cottons, Dudgeon 533 



Results of fertilizing experiments with cotton at Clemson College, Keitt 533 



Whole V. cut potato tul^ers for irrigated land, I, II, Aicher and Welch 534 



[Chilled V. unchilled potato seed for fall planting], Foot _ 535 



Proceedings of third annual meeting of Potato Association of America 535 



[Potatoes] 535 



Comparative trials with rye grasses, Breakwell 535 



Weight of seeds as related to their number and position in pod, Halstead 535 



Sudan grass, Lougher ._ 536 



Experiments with the sugar beet in South Africa, Juritz 536 



Increase in sucrose content of sugar beets after removal from soil, Wiechmann. 536 



The sugar beet seed industry in France, Malpeaux 537 



Sugar cane experiments, 1914-191G, de Verteuil 5-^7 



[Report of sugar cane work in Hawaii], Agee et al 537 



Cuban varieties of sweet potatoes, Roig and Fortun. ^ 537 



A new coefficient for measuring square-headedness in wlieat, Boshnakian 537 



Influence of environment on the color of the wheat grain, Kottur 538 



WTieat and its products, Millar _ 538 



The moisture content of heating wheat, Bailey 2^^ 



Yucca, Cunliffe : ^38 



Montana grain inspection and Federal grain standards for wheat, Atkinson 5o8 



