II CONTENTS. 



Page. 



On the role of the awns of Gramiuese, N. I. Vasilyev 718 



On the vegetative period of plants, L. P. Nilssen 719 



A study of the roots of perennial plants, E. S. Goff 720 



Evaporation and plant transpiration, W. Maxwell 721 



The fertilization of cultivated legumes, C. Fruwirth 722 



Alinit, Gerlach 722 



Experiments with Nitragin, E. Wollny 722 



On the assimilability of organic nitrogen in sterilized media, A. Lyebyedyev. 723 



The geographical distribution of cereals in North America, C. S. Plumb 72.3 



Life zones and crop zones of the United States, C. H. Merriam 724 



ZOOLOGY. 



Cuckoos and shrikes in their relation to agriculture 726 



The winter food of the chickadee, C. M. Weed 726 



Feeding habits of the chipping sparrow, C. M. Weed 726 



Joint report of the botanist and entomologist and the veterinarian on spermo- 



phile or ground-squirrel investigations, C. V. Piper and S. B. Nelson 727 



AIR — WATER — SOILS. 



Percolation, storage, and movement of water in the soil, P. P. Deherain 727 



Percentage of water retained by long columns of sand, F. H. King 727 



The farm water supply, F. W. Morse 730 



The treatment of swamp or humus soils, F. H. King 728 



Fertilizer experiments with Indian corn on marsh soils, F. W. Woll 729 



Pot-culture tests of the productiveness of the soils of Minong pine barrens in 



Douglas County, Wisconsin, F. H. King 730 



FERTILIZERS. 



On the spreading and plowing under of barnyard manure, P. P. Deherain 731 



The fertilizer control for 1897, W. A. Withers 732 



Fertilizer inspection, C. D. Woods 734 



Commercial fertilizers, M. A. Scovell, A. M. Peter, and H. E. Curtis 734 



Fertilizer analyses, R. C. Kedzie 734 



Analyses of commercial fertilizers, H. J. Wheeler and B. L. Hartwell 734 



Analysis of licensed commercial fertilizers, F. W. Woll 735 



Experiments on the action of phosphoric acid in bone meal and Valserinc 



phosphate as compared with that of superphosphate and Thomas slag, P. 



Licchti 733 



Lime, nitrogen, and soda,. H. J. Wheeler 735 



FIELD CROPS. 



Report of the department of agriculture of Washington Station 735 



Reports of the department of agriculture and horticulture, F. A. Huntley 74!) 



Fiber flax investigations, F. A. Huntley 736 



A report on the culture of hemp in Europe 737 



The influence of soil moisture and fertility on the development of the oat 



plant, M. Tucker and C. von Seelhorst 737 



Experiments with oats, J. F. Duggar 738 



The influence of depth of planting on the growth and productiveness of pota- 

 toes, E. S. Goff 740 



Growing rye after potatoes, M. Fischer 740 



The growth and use of the rape crop, J. A. Craig 741 



Special report on the beet-sugar industry in the United States, 1897 741 



