In quoting articles, please mention this BULLETIN. 



CONTENTS 



First Part : ORIGINAI, ARTICI^ES. 

 H. JUHLIN Dan-xfelt. Tile Present State of Agriculture in Sweden Pa?.c 921 



Second Part : ABSTRACTS. 



AGRICULTURAL INTELLIGENCE. 

 I. — General Information. 



Agricultural Education. — 7c i. Creation of a School of Silkworm Rearing in the Republic 



of Colombia. 

 Development of Agriculture in Different Countries. — 722. The Organisation of the 



Cuban Agricultural Experiment Station. 



II. — Crops and Cultivation. 



a) General. 



AGRicxn-TUR.\L :Meteorology. — 723. Temperature Changes due to Terrestrial Radiation and 



Relation of the Latter to Plant Growth. 

 Soil Physics, Chemistry .and Microbiology. — 724. Soluble Non-Protein Nitrogen of Soil. 



— 725. Influence of Resin and Tannin on the Balance of Nitrogen in the Soil. — 726. Ad- 

 soq^tion of Potassimn by the Soil. — 727. Basic Exchange in Soils. ^728. Relation of 

 Carbon Bisulphide to Soil Organisms and Plant Growth. — 729. The Effect of Elemental 

 Sulphur and Calcivun vSulphate on Certain of the Higher and Lower Forms of Plant Life. 



— 730. Factors influencing the Survival of Dried Soil Micro-organisms ; Puffed of Soil 

 Solution. — 731. New Russian Studies of Nitrogen-fixing Bacteria. — 732. Method for 

 the Estimation of Hygroscopic Moisture in Soils. — 733. The Reaction of Soil and Mea- 

 surements of Hydrogen-Ion Concentration. 



M\NimES and Manuring. — 734. Relation of Green Manures to the Failure of Certain Seed- 

 lings. — 735. Hj'gienic, Scientific and Economic Disposal of Human Excreta. — 736. The 

 Sfjluhility of " Fluorspar Slag " and Mineral Phosphates in Citric Acid. — 737. Potash in 

 Banana Skins and Stalks. — 738. Waste of Tobacco Ash. — 730. The Question of Sulphate 

 of .\mnionia in Russia. — 740. Manuring Tests with the New Nitrogenous Manure " Gua- 

 nol " in Germany. 



