II CONTENTS. 



BOTAXY. 



Page. 



Effect of small quantities of toxic substances upon higher plants, H. Coupin.. 322 



On the absorption of metallic poisons liy plants, H. Devaux 322 



Native and introduced forage plants, J. H. Shepard et al 323 



Autumnal translocation of material in hop plant, C. Fruwirth and W. Zielstorff . 323 



Nitrogenous products of seed and seedhngs of white lupines, N. J. Wassilieff . . 323 



The reserve carbohydrates of the bulb of the hyacinth, J. Parkin 324 



Experimental investigations on the origin of species, H. de Vries 324 



Course of hyphal filaments of Tilletia in )>ody of wheat plant, H. L. BoUey.. 324 



Individual prepotency in plants of the same breeding, W. W. Tracy 324 



The botanic garden as an aid to agriculture, W. Trelease 324 



The value of willows in retaining the banks of streams, W. W. Rowlee 325 



ZOOLOGY. 



Notes on the food of birds, T. D. A. Cockerell ' 325 



The birds of Colorado, W. W. Cooke 325 



The food of the toad, H. Garman 325 



Zoological yearbook for 1900., P. Mayer 325 



METEOROLOGY — CLIMATOLOGY. 



Forests and snow, L. G. Carpenter 325 



Meteorological observations, J. E. Ostrander and C. L. Rice 326 



Report of department of meteorology, C. H. Pettee 326 



Summaries of temperature, rainfall, and sunshine, E. F. Ladd 326 



Report of rainfall and temperatures for the year 1900 326 



Meteorological chart of the Great Lakes, A. J. Henry and N. B. Conger 327 



Meteorological reports for East Africa, 1900 327 



Meteorological observations at Manila 327 



Climatology of the Philippine Islands 327 



Rainfall and the temperature of the soil, A. Tolsky 327 



Chief meteorological factors of fertility according to observations on the 



"Alexeevskiye" estate of P. I. Levitzki, Government Tula, A. Levitzki 327 



Origin of atmospheric hydrogen, A. Gautier 327 



Combustible gases of the atmosphere — atmospheric hydrogen, A. Gautier 327 



Atmospheric dust observed at Tunis March 10, 1901, E. Bertainchaud 328 



Electro-sonorous method of combating hail, G. M. Slanoi'^witch 328 



The Tolmar experiments with explosives to control the weather, A. Hertzog.. 328 



WATER — SOILS. 



Artesian wells in North and South Dakota, W. Upham 328 



The geology of the artesian basin of South Dakota, D. S. McCaslin 328 



Drainage water and salt morasses of the Odessa sewage fields, T. Seliwanoff . . 328 

 Researches on moorland waters. II, Origin of the combined chlorin, W. 



Ackroyd '. 328 



The systematic investigation of soils, B. W. Kilgore 328 



Soil temperatures as affected by color and moisture of soil, J. B. Reynolds 328 



Relations of soil solutions to phosphates used as fertilizers, T. Schloesing 329 



Sources of the constituents of Minnesota soils, C. W. Hall 329 



Solubility of gypsum in aqueous solutions of sodium chlorid, F. K. Cameron 



and F. D. Gardner 329 



Report of Valuiki Agricultural Experiment Station, 1895-96, V. S. Bogdan 329 



Formation of sodium carbonate by plants, F. K. Cameron and F. D. Gardner. 330 



Study of agricultural value of soils of Madagascar, A. Miintz and E. Rousseaux. 330 



The soils of the colony of the Cavaignac, Algeria, J. Dugast 330 



FERTILIZERS. 



Influence of systems of fertilizing upon amount and quality of the humus of 



the soil, W. Frear and E. H. Hess 330 



Experiments on the relative fertilizing value of ammonia salts, P. Wagner... 331 



Fertilizing action of phosphoric acid of bone meal, O. Kellner and 0. B5ttcher. 331 



The most pi ofitable amount of fertilizer to apply, M. Fischer 331 



The uses and abuses of fertilizer formulas, S. M. Tracy 332 



