■CONTENTS. in 



The investigation of a climatic gradient, Shreve 821 



The nature of the absorption and tolerance of plants in bogs, Dachnowski 821 



Observations on evaporation and transpiration in prairie and forest, Shimek... 821 



Shade. as a factor influencing evaporation, Burns 821 



A method for differentiating absorption and transpiration, Briggs and Shantz.. 822 



Influence of temperatm-e on the respiration of the higher plants, Kuyper 822 



Daily fluctuations of respiration in leaves in darkness, Meyer and Deleano 822 



Influence of phosphates on the separation of carbon dioxid by plants, Iwanoff . . 822 



Permeability of protoplasm to ions and the theory of antagonism, Osterhout. . 823 



Investigations on localization and function of potassium in plants, Weevers.. 823 



Observations on the physiological significance of caffein, Weevers 823 



Influence of anesthetics on osmotic properties of plasma membranes, Lepeschkin 823 



On the phototropic results of bilateral illumination, Hagem 824 



The morphology and biology of the tubercle bacteria of legumes, Zipfel 824 



Assimilation of atmospheric nitrogen through bacteria, Pringsheim 824 



Nitrogen compounds in growing mustard, Densch 824 



The behavior of Pseudomonas radicicola in the soil, Duggar and Prucha 824 



Soil organisms which destroy cellulose, Kellerman and McBeth 825 



The green fluorescent bacteria of maple sap, Edson and Carpenter 825 



The deposition of iron on the mycelium of an aquatic fungus, Moore 825 



Observations on the effects of toxic substances on the olive tree, Petri 825 



Winterkilling and smelter injury in the forests of Montana, Hedgcock 826 



Wound stimulation and wound closure in plant organs, Schneider-Orelli 826 



Endotrophic mycorrhiza of the horse chestnut, Jaccard 826 



Inhibiting factors in Lychnis and Papaver, Shull 827 



Inheritance in Capsella, Hus 827 



The relationship of the wheats, Schulz 827 



Anatomical structm-e of wood of Cytisus adavii, Janssonius and Moll 827 



Ingrowing sprouts of Solanum ticberosuvi, Gager 828 



The breeding of trcfpical orchids from seeds, Burgeff 828 



The microscopic differences between hemp and flax fiber, Sonntag 828 



FIELD CROPS. 



Some principles of dry farming, Waldron 828 



Report of division of agronomy, Etheridge 828 



[Agricultural development of Nyasaland], McCall 829 



Agricultmal development of Nyasaland 830 



[Field crops work at Dikopshof |, Hofmann and Hansen 830 



Report of the Imperial Bavarian Moorculture Station, 1909, Baumann 830 



Second annual report of the demonstration area, Peacock 830 



Experimental forage plats, 1910-11, Smith 830 



Summer crops for grain and eilage, western district, Reynolds 830 



Revegetating experiments on depleted country, MacPherson 830 



Fodder plants indigenous to Australia 830 



Breeding experiments with grasses, Dix 830 



The grama grasses: Bouteloua and related genera, Griffiths 830 



Meadows and pastures, Wing 830 



Report on field trials on the manuring of seeds hay, 1910, Harrison 831 



Hybridization investigations with oats and wheat, Nilsson-Ehle 831 



Manuring of oats and mangels. Dyer and Parke 833 



Test of different rates of planting rye and potatoes, Bieler 833 



Stack-building at Wagga Experiment Farm, Fuller 833 



Chou moellier 833 



Productive power of red clover from different sources, Liebau 833 



Romance of a clover, McDonald 833 



Crossbreeding of maize and the Mendelian theory, Pfister 833 



Maize at Bathurst Experiment Farm, Peacock 834 



Maize fodder experiments on the south coast, Makin 834 



A cotton variation with a self-fertilized ancestry. Bain 834 



[Cotton on the experimental farms of Bengal, 1910-11], Sherrard 834 



Cotton growing in Sind 834 



Proceedings of the cotton production commission 835 



Guar 835 



Trials of varieties of kale 835 



Report on field trials with varieties of mangels in 1909, Milburn " 835 



Field trials with varieties of mangels in the year 1910, Harrison 835 



