1916] CONTENTS. HI 



Page. 



Influence of temperature on the moisture intake of seeds, ShuU 222 



Seed sterility and delayed p;crminaLion in (Enothora, Davis 223 



The influence of the medium upon the orientation of primary roots, Ilolman. .. 223 



The root growth of forest trees, McDougall 223 



Influence of electrical conditions in plants on absorption by roots, Shushak 223 



The structure of the bordered pits of conifers and its bearing, Bailey 223 



Studies on the aquiferous vessels in plants, II, Montemartini 224 



On the permeability of certain nonliving plant membranes to water, Denny 224 



Studies in permeability. — II. Effect of temperature. Stiles and Jorgensen 224 



The production of hypertrophic and hyperplastic growths in shoots, Schilling.. 224 



Factors determining presence of fat as food reserve in woody plants, Sinnott... 225 



Properties of a chromogen generally present in plants, Wolff and Rouchelmann. 225 



Lipolytic action in germinating teliospores of G. juniperivirginianx, Coons 225 



Acidity and gas interchange in cacti, Richards 225 



Localization of acids and sugars in fleshy fruits, Demoussy 226 



What are chondriosomes? Mottier 226 



Methods for quantitative and qualitative studies on the soil flora, Manns 226 



Media for studies on Azotobactcr and nitrifiers, Manns 226 



Peat organisms that slowly liquefy agar, Manns 227 



The transmission by maize seeds of the effects of dctasseling, Ileckel 227 



Experiments in recombining endosperm colors in corn, Harper 227 



The chlorophyll factors in Lychnis dioica, ShuU 227 



Orthogenetic saltation in Nephrolepsis, Benedict 227 



Evidences of hybridism in the genus Rubus, Hoar 227 



An interesting modification in Xanthium, Shull 227 



Transmissibility of characters acquired by plants grown in salt water, Lesage.. 228 



Pollen sterility in relation to distribution of Onagracese, Forsaith 228 



A remarkable new Eysenhardtia from the west coast of Mexico, Safford 228 



FIELD CROPS. 



[Work with field crops], Waldron 228 



Sixth annual report of the Williston substation, 1913, Schollander 229 



fWork with field crops in ] 915] 229 



Crop rotations for upper Wisconsin, Delwiche 229 



Experiments with corn, Noll 229 



The development and properties of raw cotton. Balls 230 



Note on the classification of the rices of Lower Burma, Beale 230 



The culture of rice in Spain, Jumelle 230 



Annual report of the Bureau of Sugar Experiment Stations, Scriven 230 



Planting sprouted cane cuttings, Schuit 231 



Sweet- potato culture for the southern planter, Crow and Waughtel 232 



Timothy: History, culture, variability, and breeding work at Svalof, Wittee. . 232 



Tobacco seed beds, Charlan 233 



On the inheritance of some characters in wheat, II, Howard 233 



The occurrence of sterile spikelets in wheat, Grantham 233 



HORTICULTURE. 



Horticultural investigations. — A retrospect, Corbett 234 



Some problems connected with killing by low temperature. Chandler 234 



Hotbeds and cold frames, Adams 234 



Spraying calendar, Taylor and Willis 234 



The farm vegetable garden, Bouquet 234 



Preliminary report on celery storage investigations, Thompson 234 



Fertilizer experiments with kale, Johnson 235 



An investigation in tomato breeding, Reeves 235 



The inheritance of size and productiveness in tomatoes, Myers 235 



Horticultural investigations, Lewis 235 



Further results with dynamite for tree planting, Farley ^^o 



Report of committee on score cards. Alderman ^^o 



Apple-tree characters and bearing on variety substitution, Shaw ^3b 



Factors correlated with hardiness in the apple, Allen ^^o 



The relation of climate to varieties of apples, Winslow ^ii 



One phase of meteorological influence indicated by hand polhnation, b letcher. Z67 



Osmotic relationships and incipient drying with apples. Chandler ^3» 



Experimental results in young orchards in Pennsylvania, Stewart ^^» 



A fertilizer experiment with peaches, McCue -^° 



