CONTENTS. Ill 



Page. 



Is artificial calcium carbonate more effective than limestone meal? Yokoyama. 624 



On the liiiio factor for oats, Sirker (524 



Influence oi different ratios of lime to ma<?nesia on the growth of rice, II, Aso (524 



Influence of the ratio i)f lime to magnesia on the yield in sand culture, Aso. . . . (524 



Some principles in manuring with lime and magnesia, Loew ()24 



The use of manganese as a fertilizer, Haff ner (j24 



The results of experiments on sugar beets with distillery vinasse ()24 



Researches on the preservation of night soil, Aso and Nishimura ()24 



Manures and substances proposed as manures. Watt ()24 



l'>rtili?;ers, Rose and Heimburger (524 



Analyses of fertilizers sold in Maryland, McDonnell et al 025 



Analyses of fertilizers, fall, 1908, and spring, 1909, Kilgore et al 625 



Standard fertilizers and the fertilizers act, 1909, McGill 625 



AGRICULTURAL BOTANY. 



Ecology of ])lants, Warming et al 625 



The viability of weed seeds under different conditions of treatment, Fawcett. . 625 



Variation ui fungi due to environment, Stevens and Hall 626 



Notes on Peronosjxjrales for 1907, Wilson ()26 



Synopsis of the British Basidiomycetes, Smith 626 



The effect of chemotropism on the parasitic action of fungi, Petri 626 



Toxic effects of salts as related to ammonification by Bacillus subtilis, Lipman. . . 627 



On similarity in the behavior of sodium and potassium, Osterhout 627 



Some notes on the modifications of color in plants, Kraemer 627 



The effect of salts upon pigments, Bunyard 627 



Chemistrj' of chlorophyll and relation to coloring matter of blood, Marchlewski. . 628 



Photodynamic work of chlorophyll and its relation to photosynthesis, Hausmann 628 



Production of anthocyanin as a result of anular decortication. Combes 628 



The development of fat in the black walnut (./wgr/ans nigra), M'Clenahan. . . 628 



The distribution of poisons in the Amanitas, Ford 629 



Studies of vegetable rennets. Rennets of Solanacese, Gerber 629 



Histological structure and specific gravity of seeds of Pyrus, Pammel and Robh . 629 



FIELD CROPS. 



Irrigati(m and dry farming and cereal investigations at Caldwell, Nelson 629 



Report of the work at the Holly Springs Station for 1908, Ames 630 



Report of the director of agriculture, Nesom 630 



Report of the agricultural department, Bengal, for 1908, Gourlay 630 



Report of agricultural department. Eastern Bengal and Assam, for 1907-8, Hart . 631 



Report of agricultural stations in Eastern Bengal and Assam for 1908, Hart 631 



Agriculture in the Tropics, Willis 631 



The cultivated plants of our colonies, Westermann 631 



The culture of industrial plants in Argentina, Girola 631 



The choice of varieties of grains for the province of Silesia, Stanjek 631 



The Berlin and Vienna systems of judging barley, Cluss and Schmidt 631 



Report on agriculture in Asia Minor, with special reference to cotton, Dunstan. . 631 



A })rofitable cotton farm, Goodrich 632 



Cotton cultivation: Its extension in Ceylon, McCall 632 



Flax culture and flax industry in Holland, Belgium, and F'rance, Frost 632 



A study of the varieties of Abaca (Manila hemp), Saleeby 632 



The relation between specific gravity and germinative energy of oats, Stigell. . 632 



Farm management in northern ]3otato-growing sections. Dodge 632 



( )bservations on the sugar content of sugar-beet crops, Schulze and Lipschitz. . 633 



The beet sugar industry ''^-^ 



Report of the bureau of sugar experiment stations for 1908-9, Maxwell (i3:{ 



< ane seedlings in Java, Kobus ^3Ji 



Sweet potato culture, Garcia ^33 



Preparing land for winter wheat. Ten Eyck and Call 634 



X'ariety tests of wheat, Noll 6^4 



Wheat culture tests of Silesian wheat growers' association, 1906-1908, Opitz 635 



Grain yields of the world in 1907 ' 635 



Production of the princij^al grains in 1908 6''^5 



Weeds; their eradication and control, Adams 63o 



The eradication of bindweed, or wild morning-glory, Cox 635 



Cultivation of PamJIoraffjetida and J/il-«/i/rt smn*ns to down weeds, Bamber.. 635 



Seed tests and microscopic examinations, Voigl 6.36 



