I9i2.] Selected Contents of Periodicals. 



1069 



SELECTED CONTENTS OF PERIODICALS. 



Agriculture, General and Miscellaneous- 

 Aeration of the Soil by Earthworms, /. Newton Friend. [59-5; 63.11.] 

 Weeds — Their Peculiarities and Distribution, Winifred Brenchley. 

 [63.259(04).] (Sci. Prog., No. 23, January, 19 12.) 

 Influence of Rice Bran upon the Manurial Value of Phosphoric Acid 

 Contained in Oil Cakes, Y. Kida. (Jour. Col. Agr. Imp. Univ. Tokyo, 

 Vol. I., No. 3, 1911.) [63.165.] 

 Untersuchungen iiber das Kalibcdurfnis von Azotobacter, Dr. Vogel. 

 [576.83.] Eine physiologische Studie iiber die nitratreduzierenden 

 Bakterien, E. B. Fred. [576.83.] (Centbl. Bakt. [etc.], 2e Abt., 32 Band, 

 No, 13-19, 27 Januar, 1912.) 

 Toxic excreta of plants, F. Fletcher. [58.11.] Carbohydrates of the man- 

 gold leaf, A. V. Campbell. [543.1 ; 63.332.] The amounts of nitrogen as 

 ammonia and nitric (and nitrous) acid in the rainwater collected at 

 Uithuizermeeden, Groningen, /. Hudig. [63.113.] A note on onion 

 couch, L. M. Underwood. [63.259.] The direct assimilation of inorganic 

 and organic forms of nitrogen by higher plants, H. B. Flutchinson and 

 N. H. J. Miller. [58.11 ; 63.161.] The flow of water and air through 

 soils, /. W. Leather. [63.11.] The phosphate nutrition of plants, A. 

 Baguley. [58.11 ; 63.1672.] (Jour. Agr. Sci., Vol. IV., Part 3, January, 

 1912.) 



tlber Humussauren, Dr. Br. Tacke und Dr. H. Siichting. [63.11.] 

 Versuche iiber Stickstoffumsetzung in verschiedenen Boden, Hugo 

 Fischer. [576.83.] (Landw. Jahrb., XLI. Band, Heft 5, 1911.) 



Die Schwarzerde (Tschernosiom), P. Kossowitsch. (Internat. Mitt. 

 Bodenkunde, Band I., Heft 3/4, 1912.) [63. in.] 



An Ecological Study of a Cambridgeshire Woodland, R. S. Adamson. 

 (Jour. Linn. Soc, Bot., Vol. XL., No. 276, February, 1912.) [63.49:58; 

 58.19.] 



Die Mobilisierung der Phosphorsaure des Bodens unter dem Einfluss der 

 Lcbenstatigkeit der Bakterien, S. A. Sewerin. [63.115.] (Centbl. Bakt. 

 [etc.], 2» Abt., 32 Band, No. 20-25, 6 Februar, 1912.) 



Field Crops — 



Cultivation, Preparation, and Production of Flax and Linseed. (Bui. 



Imperial Inst., Vol. IX., No. 4, 191 1.) [63.341 11.] 

 Die Provenienzfrage bei Klee- und Grassaaten, mit Bezug auf deren Werts- 



beurteilung sowie den heutigen Stand und zeitgemassen Anbau ihrer 



Gewinnung und ihres Verkehrs, Dr. Albert Boergcr. (Landw. Jahrb., 



XL II. Band., Heft 1, 1912.) [63.33(b).] 

 The Influence of Time of Cutting upon the Yield and Composition of Hay, 



C. Crowther and A. G. Ruston. (Jour. Agr. Sci., Vol. IV., Part 3, 



January, 1912.) [63.198.] 

 Plant Diseases— 



A disease of Sweet Peas, Asters, and other plants (Thiclavia basicola, 

 Zopf), G. Massee. (Roy. Bot. Gard., Kew, Bui. Misc. Inform., No. 1, 

 1912.) [63.24.] 



Bedingungen der Hexenringbildung bei Schimmelpilzen, Max Munk. 



[63.24.] Rostige Getreidekorner— und die Uber-winterung der Pilzspezies, 



Jakob Eriksson. [63.24.] (Centbl. Bakt. [etc.], 2 e Abt., 32 Band, 



No. 13-19, 27 Januar, 1912.) 

 Copper Fungicides, S. U. Pickering. [63.295.] Bacterial diseases of plants, 



M. C. Potter. [63.23.] (Jour. Agr. Sci., Vol. IV., Part 3, January, 



1912.) 



