II CONTESTS. [Vol.40 



Pace. 



An improved automatic burette, Hough 503 



Colorimetric scale for estimation of hydrochloric acid, Delort and Roche— 503 



Determination of soil nitrates by phenol disulphonic acid method, Noyes__ 506 



Solvent action of citric and nitric acids on rock phosphate, Stenlus 5 l,- > 



Contribution to the study of the Adamkiewlcz reaction, Voisenet 507 



The determination of lactose, Hildt 507 



Determination of lactose with sucrose and Invert sugar, Grossfeld 5<>7 



Determination of fructose in presence of aldoses. Herzfeld and Lenart __ ".117 



Determination of acidity and nitrogen in wheat. Swanson and Tague 507 



Total and lecithin phosphoric acid content of peas. Halasz 508 



Carbon dioxid determination in baking powders, Schellbach and BodinuS— 503 



Carbon dioxid determination in baking powders. Tillmans and Henblein _ 508 



Microscopic investigation of coffee substitutes. Griebel 508 



The microscopic investigation of coffee substitutes, Gjjlebel 508 



Witgatboom: A substitute for chicory, McCrae and Kloot 508 



Methods for nonprotein nitrogen of milk, Denis and Minot 509 



The microanalysis of malted milk. Ballard 509 



Reduction of humin nitrogen In feeding stuffs. Eckstein and Grindley 510 



[Treatment of massecuites] , Schecker 510 



Juice clarification and decolorlzation with new carbon. Peck and Adams. 510 



Preparation of carbon tilters for purification of sugar, Daude ."ill 



Utilization of seeds ,,f pears and apples for extraction of oil, Truelle .".11 



MKTKOKOI.OGY. 



Periods of plant growth and rest 511 



Cllmatological data for the United suites by sections 511 



Observations at Massachusetts Station, (istramler and Chandler 511 



Meteorological records for 1917 511 



The exceptional droughl of the summer of 1918 in the Gironde, Courty 51 1 



[Meteorological review for the region of Paris], Flammarion 511 



-oils — FEBTILIZKBa. 



Soluble salt content of snils and factors affecting it, McCool and Miliar.- 512 



Effecl of carbon disulphid and toluol mi organisms, Galney 513 



Influence of higher plants on bacterial activities in Boils, Lyon 513 



Bacteria of frozen soils in Quebec, T and II. Vanderlecs 513 



Champaign County soils. Hopkins el al 51 I 



The value of manure <>n Indiana soils, Wlancko and Jones 514 



The booh of the Rothamsted experiments, Hail, revised by Russell. -"it 



Woburn pot-culture experiments. 1917, Vbelcker 515 



Cooperative fertilizer experiments, 1908 1917, Fraps 515 



Production and consumption of potash [in the United States], Houston.. 516 



Domestic production of potash in 1918, Hicks .".17 



Some general information on lime, McCool and Millar 517 



Inspection of commercial fertilizers, Hasklns, Walker, and Pierce .">i7 



Analyses of commercial fertilizers, Wessels 317 



A.GRICUX.TUKAI, BOTANY. 



Cytokinesis of the pollen mother cells of certain dicotyledons, Farr 517 



Cell division by furrowing in Magnolia, Farr 518 



Some factors affecting Inulase formation in Aspergillus niger, Voir 518 



The biology of Oldium lactis, Llnossler 518 



The response of Pilobolus to light, Parr .mm 



The structure of the integumentary system of the barley grain, Collins 519 



The laticiferous system of Ihnn hrasilit nsis and its function. Sharpies 519 



Effecl of bog ami swamp waters on swelling in plants, MacDougal 520 



A new three-salt nutrient solution, Livingston and Tottingbam 520 



Organic plant poisona — II. Phenols, Brenchley 520 



Studies on the embryo sac and fertilization In Oenothera, Ishika\va__ 521 



Abortiveness as related to position in the legume, Halsted 521 



Studies in classification and nomenclature of bacteria. — VII, Buchanan - 521 



A promising chemical photometer for physiological research, Ridgway... 521 



