CONTENTS. Ill 



SOILS — FERTILIZERS. Page. 



Handbook of moor culture, Bersch 311 



Soil surveys as related to "jeology, Kiimmel 311 



Analyses of soils of Formosa, Ar<^entina, Bolla and Lavenir 311 



An interesting soil problem, Watt 311 



Acid soils, Blair 311 



Report on fertilizer experiments on swamp soils, Harcourt 312 



Swamp soils, Harcourt 312 



The separation of soluble mineral products from plant residues, Kravkov 312 



The processes of interaction between the products of the decomposition of 



organic remains and the constituents of the soil, Kravkov 312 



[Organic matter as a means of preventing loss of plant food by leaching], Blair. 313 



Relations between permeability of soils and their irrigation, Miintz and Faure. 313 



Moisture determinations, Blair 313 



Contribution to methods of bacteriological soil investigation, Vogel and Zeller. 313 



Investigations on Azotobacter chroococcmn, Krzemieniewski 313 



Inoculation of legumes with nodule bacteria, Gerlach and Vogel 313 



A new theory of soil fertility, Einecke 313 



Is the value of manure affected by the use of disinfecting materials? Sobotta. . 314 



Green manures. Cagey 314 



Sardinian guanos with special reference to ammoniacal nitrogen, Binaghi 314 



The guano birds of Peru, Coker 314 



Sulphate of ammonia in Germany in 1908 314 



Nitrogen from the air 314 



The manufacture of cyanamid, De Seynes 314 



The new nitrogenous fertilizers utilizing atmospheric nitrogen, Guillin 314 



The actual status of the new nitrogenous fertilizers, Ragondet 315 



Fertilizer experiments with phosphates, Klebahn 315 



Solution of phosphoric acid under action of bacteria and yeasts, Krober 315 



Basic phosphatic slag, Lindsey 316 



Production of phosphate rock during 1908 316 



A new potash salt 316 



The action of soda on plant growth, Vageler 316 



Lime and magnesia in plants and soils, Loew 316 



Locusts as a fertilizer 316 



On the utilization of pond mud as a soil improver, Gruner 316 



Commercial fertilizers, Burd 316 



Fertilizers, Roberts 316 



Fertilizing material?, Shutt 316 



AGRICULTURAL BOTANY. 



Metabolism in Arum spadiccs and electrical response of tissues, Waller 317 



Mechanical and electrical response of plants, Bose 317 



The influence of electricity on plant growth, Breslauer 317 



Movement in plants, Darwin 318 



Influence of pulling tension on formation of mechanical tissue, Bordner 318 



Influence of contact and tension on tendrils of Passiflora ccerulca, Brush 318 



Effect of swaying by the wind on formation of mechanical tissue, Gilchrist 318 



The influence of living cells on the transpiration current, Dixon 318 



On the increase in dry weight as a measure of assimilation, Thoday 318 



Carbohydrates of snowdrop leaf and their bearing on photosynthesis, Parkin. . . 319 



The factors influencing photosynthesis in water plants. Smith 319 



Color changes in flowers produced by controlling insolation, Rawson 319 



Mutual interactions of plant roots, Dandeno 319 



[Studies on the adventitious embryos in the orange and mango]. Belling 320 



Further contributions to the subject of graft hybrids, Winkler 320 



Trees, Ward 320 



American medicinal barks, Henkel 320 



The Uredineae of Finland, Liro (formerly Lindroth) 321 



Culture experiments with some rust fungi, I, II, Liro (formerly Lindroth) 321 



The death rate of bacteria under the action of disinfectants, Chick 321 



FIELD CROPS 



Field experiments with farm crops, Saunders et al 321 



Experimental work in field husl)andry, Zavitz 325 



Field experiments, Scott 328 



