II CONTENTS. 



Page. 

 The influence of changes of temperature on tlie respiration of plants, W. Pal- 



ladin 112 



On the influence of ansesthetics on the respiration of plants, N. Morkowine... 112 



Experiments on floral colors, P. Q. Keegan 113 



FERMENTATION — BACTERIOLOGY. 



Re^wrt of the bacteriologist, H. H. Lamson 117 



Variability in the power of liquefying gelatin possessed by bacteria, H. W. 



Conn 114 



Permanent forms of nitric and nitrous organisms, A. Beddies 114 



On the nitrification of organic nitrogen, V. Omelianski 11.5 



Denitrification and fermentation, K. Wolff 115 



Recent investigations on the development of aromatic principles by alcoholic 



fermentation in the presence of certain leaves, G. Jacquemin 1 1.5 



Investigations concerning bacteria in the fermentation of tobacco, J. H. Vern- 



hout 116 



On the chemical nature of enzyms, O. Loew 117 



METEOROLOGY. 



Monthly Weather Review, Vol. XXVIII, Nos. 1-3 118 



Maryland Weather Service, Vol. 1 119 



Meteorological observations at Michigan Agricultural Experiment Station for 



the year 1898, R. C. Kedzie 121 



Meteorology, C. H. Pettee 120 



Meteorological summary for Ohio, 1898, C. A. Patton 120 



Meteorological observations, W. B. Al wood 121 



Relations between the annual variations of temperature and the successive 



phases of vegetation, A. Desmoulins 120 



WATER — SOILS. 



The fruit soils of Virginia, W. B. Alwood 122 



Analyses of soils, C. F. Juritz 1 22 



The behavior of water-soluble phosphoric acid in the soil, M. Ullmanu 123 



Cultivation and weeding, P. P. Deherain 123 



A new method for the mechanical analysis of soils, G. Scarlata 123 



FERTILIZERS. 



Denitrification and the decomposition of animal excrement in the soil, C. 



Rogoyski 1 24 



Ground bone compared with superphosphate and Thomas phosphate as sources 



of phosphoric acid, U. J. Mansholt 125 



Introduction to field experiments with fertilizers, A. L. Knisely 125 



Field tests with fertilizers on heavy clay lands, H. A. Huston 126 



The maintenance of fertility, C. E. Thorne 127 



Commercial fertilizers, S. W. Johnson, E. H. Jenkins, et al 128 



Commercial fertilizers, M. A. Scovell, A. M. Peter, and H. E. Curtis 130 



Analyses of commercial fertilizers, W. C. Stubbs 130 



The production of the Stassfurt deposits in 1899, Maizieres 1 30 



FIELD CROPS. 



The influence of distance on the growth and chemical composition of plants, 



C. von Seelhorst and Panaotovic 1 -^2 



The Woburn field experiments, 1898, J. A. Voelcker 132 



