II CONTENTS. 



Page. 



A descriptive catalogue of useful fiber plants of the world, C. R. Dodge 328 



Little-known grasses, F. Lamson-Scribner 328 



The water hyacinth and its relation to navigation 111 Florida. II. J. Webber. .. 328 



The leaf structure of Jouvea and Eragrostis obtusiflora 328 



Report of the botanist, G. E. Stone and R. E. Smith 324 



Experiments ou the assimilation of ammoniacal and nitric nitrogen by the 



higher plants, F. Laurent, E. Marchal, and E. Carpiaux 325 



The dependence of the respiration of plauts on their content of insoluble pro- 

 tein, V. I. Palladin 326 



Report of botanical department, J. C. Arthur 326 



Inoculation experiments with Nitragin, D. Dickson and L. Malpeaux 327 



Experiments with Nitragin, C. A, Goessmann 329 



ZOOLOGY. 



The habits, food, and economic value of the American toad, A. H. Kirkland 330 



METEOROLOGY. 



Report of the meteorologist, L.Metcalf 332 



Report of the assistant meteorologist, W. D. Clayton 332 



Meteorological observations, L. Metcalf and J. L. Bartlett 332 



WATER — SOILS. 



Drinking water, F. W. Traphageu 335 



Tho value of silt as a manure, J. W. Leather 333 



Studies of Oklahoma soils, J. H. Bone 333 



On the fixation and nitrification of nitrogen in arable soils, P. P. Dehcrain 334 



Denitrification, G. Ampola and E. Garino 334 



On the role which humus substances play in the fertility of the soil, A.Gautier. 334 



On the determination of the potash in soils soluble in citric acid, 0. von Garola. 334 



FERTILIZERS. 



Analyses of commercial fertilizers, J. L. Hills, IS. (). White, and C. H. Jones.. 335 



Analyses of commercial fertilizers, M. A. Scovell, A. M. Peter, and H. E. Curtis. 338 



fertilizer analyses, H. 13. Battle 338 



Compilation of analyses of fertilizers, II. D. If ask ins 339 



Commercial fertilizers, C. A. Goessmann 339 



Official inspection of commercial fertilizers and agricultural chemicals in 1896, 



C. A. Goessmann 339 



Analyses of licensed commercial fertilizers, F. W. Woll 339 



I he cost of plant food in ( lonnecticut, spring months of 1897 339 



Home-mixed fertilizers and composts, II. B. Battle ■ 339 



The fertilizer control station -336 



On the citrate solubility of phosphoric acid in ground bone, A. Keller 337 



Field experiments with different commercial phosphates, C. A. Goessmann.. . 337 



How to conduct field experiments with fertilizers, G. C. Caldwell 339 



Effect of ehlorid of potassium on sulphate of ammonium in mixed fertilizers, 



C. A. Goessmann 338 



FIELD CROPS, 



Report of the agriculturist, W. P. Brooks 339 



Report of the agriculturist, W. C. Latta 347 



The man uring of cotton 348 



Forage crops, I. P. Roberts and L. A. Clinton 311 



Field notes on some Nevada grasses, F. H. Hillman 348 



( Observations with leguminous crops at Amherst, ( '. A. Goessmann 348 



Field experiments on leguminous crops in rotation, C. A. Goessmann 348 



