II CONTENTS. 



BOTAXy. 



Page. 



Twigs of common trees and shrubg, F. H. Hillman 519 



A study of the root systems of cultivated plants grown as farm crops, A. M. 



Ten Eyck 51(5 



Sugar-producing plants, L. (Jeschwind 518 



Hydrocyanic acid in plants, M. Soave 518 



Soil inoculation for promoting the growth of legumes, F. T. Shutt 518 



METEOROLOGY. 



How to prevent hailstorms, P. X. Kritski 520 



Monthly Weather Review, Vol. XX VIII, Nos. 4-6 520 



]Meteorological summary for 1898, V. E. Muncy 521 



A I R WATER SOILS. 



Mineral waters, A. M. Peter and H. E. Curtis 526 



Field operations of the Division of Soils, 1899, M. Whitney et al 522 



A study of the physical properties of clay as related to soil structure, V. H. 



Davis 525 



The moisture of the soil under the pine forest of the Khrenov estate, G. 



Morosov - - 525 



Drainage for alkali spots, C. E. Mead 526 



Description of a soil map of the Connecticut Valley, M. Whitney 527 



FERTILIZERS. 



On the availalnlity to grass of nitrogen in form of nitrate of soda, cotton- 

 seed meal, and fine, hard bone, E. H. Jenkins and W. E. Britton 527 



On the availability to Hungarian grass of nitrogen in form of nitrate of soda, 

 cotton-seed meal, and raw, boiled, and steamed bone, E. H. Jenkins and AV. 

 E. Britton 528 



On the availability of the nitrogen of hard raw bone as affected by applications 



of slaked lime, E. H. Jenkins and W. E. Britton 528 



The comparative value of nitrate of sodium and sulphate of ammonium as 



manures, R. Warington 529 



Niter earth, wood ashes, and phosphatic material, A. ]M. Peter and H. E. 

 Curtis 530 



FIELD CROPS. 



Field experiments at the experiment farm at Lauchstiidt in 1897 and 1898, ]M. 



Maercker 531 



Field experiments with farm crops, W. Saunders, J. H. Grisdale, W. T. ]Mac(jun, 



R. Robertson, S. A. Bedford, A. :Mackay, and T. A. Sharpe 535 



Corn culture in North Carolina, B. Irby 538 



Crops for alkali soils, C. E. ]\Ieail 538 



Grasses and forage crops, C. A. Keffer 538 



Kentucky forage plants — the grasses; analyses of some Kentucky grasses, H. 



Garman and A. ]\I. Peter 547 



Drought-resisting ff)rage plants at the cooj^erative range experiment station, 



Highmcre, S. Dak., J. H. Shepanl and I). A. Saunders 547 



