CONTENTS. ni 



AGRICULTURAL BOTANY. 



Page. 



Experimental studies in the physiology of heredity, Blackman et al 822 



Heredity and mutation as cell phenomena, Gates 823 



Genetical studies on Oxalis, Nohara 823 



Seh-pollination and artilicial cross-polhnation in rice, Fameti 823 



The natiire of poloria in flowers, Sirks 823 



The nature of poloria, Sirks 823 



Recent studies on the formation of fiower-coloring materials, Schiemann 824 



Relation between vegetative vigor and reproduction in Saprolegniacese, Pieters . 824 



Influence of nutrition on sexual organs in fern prothallia, Nagai 824 



Relation of moisture to seed production in alfalfa, Martin 824 



Presence and physiological significance of tannin in plants, van Wisselingh 825 



Elaioplasts in monocotyledons and dicotyledons, Politis 825 



The electrical conductivity of sap in vegetable tissues, MameU 825 



Studies on wilting, drjdng, and returgescence of plants, Holle 825 



Relations of plants to distilled water and dilute toxic solutions, Merrill 825 



Electrolytic determination of exosmosis from the roots of plants, Merrill 826 



The question of the toxicity of distilled water, Hibbard 827 



Plant records of an expedition to Lower CaKfornia, Goldman 827 



New or noteworthy plants from Colombia and Central America, V. Pittier 827 



FIELD CROPS. 



Moisture content and ehrinkage of forage, Vinall and McKee 827 



Method of coiTecting for soil heterogeneity in variety tests, Surface and Pearl. . 829 



Colonial plants. — Textile plants, Jumelle 829 



The curing of blue-grass seeds as affecting viability, Garman and Vaughn 829 



Testing seed corn, Williams 830 



Cotton experiments, 1915, Brown 830 



Report on variety tests of cotton for 1915, Winters and Herman 831 



Japanese cane, Scott 831 



Sudan grass, Williams 831 



Manurial experiments on sugar cane, 1912-1914, de Verteuil 831 



Manm-ial experiments on sugar cane, 1912-1915, de Verteuil 832 



ProceecHngs of Association of Official Seed Analysts of North America, 1914 . . . 832 



Results of seed inspection, 1914, Helyar and Schmidt 832 



HORTICULTURE. 



Subtropical vegetable gardening, Rolfs 833 



Vegetable culture. Van Hermann and CunUffe 833 



Cabbage, Price and Stelzenmuller 833 



Early peas tried at Wisley, 1915, Titclimarsh 833 



Factors affecting regular bearing in orchards, Gourley 833 



Bridge gi-afting of fruit trees, Fletcher 833 



Pruning, Chandler and Knapp 833 



Apple and pear growing, Allen 833 



Grass mulch culture of apple orchards, Ballou 833 



The methods of propagation of the best varieties of perry pears, Truelle 834 



Fertilizer experiments with cranberries, New_ Jersey, 1915, Schlatter 834 



Resistance of various gooseberry varieties against mildew, Kock 834 



Strawberry culture, Jimenez 834 



Note on some grapes of French- American and American hybrid Aones, Tornello. 834 



Muscadine grapes, Husmann and Bearing 834 



The raisin industry, Husmann : . . 835 



[Varieties of the avocado], Popenoe 835 



Study on the chayote (Scchium edule), Hcrrera 835 



Features of the grapefruit in California, Shamel 835 



The consumer's dollar working backwards, Powell 835 



Seed gardens 835 



Fertilizer experiments at Malabar, II, Bosscha 835 



The production and commerce of nuts in Asia, Rigotard 835 



Experiments in foi'cing the lily-of-the-valley by warm water, Langer 835 



[Phloxes and pyrethrums at Wisley, 1915], Titchmarsh 836 



House and window plants, Bois 836 



Fertilizing lawn and garden soils, Brown 836 



The North Dakota farmstead, its arrangement and adornment, Werner 836 



Gardeners' and florists' annual for 1916, edited by Dick 836 



