20 



(2) The wiud instead of layinif bare the seed rather deepens the 

 covering by partially filling up the tracks of the rollers. 



(3) Economy of seed through the certainty that all is covered. 



(4) The weeds are not so rank and interfere less with the growth of 

 the grain." 



BULLETIN NO. 12, APRIL, 1889. 



Forestry, C. A. Keffer (pp. 3-13). — This bulletin contains an ac- 

 count of the operations in forestry undertaken at this Station. 



In the month of October, 1887, a plat of ground containing about 3 

 acres, lying north of the college buildings, was planted with tree seeds, 

 the intention being to permit the trees to stand where they grew, and 

 thus secure a windbreak for the buildings and campus. The ground 

 used is at the crest of a slight elevation which slopes to the west for 

 about half a mile to a small creek. The soil is black, with a stiff yellow 

 clay subsoil, in which there is a little sand. While not " hard pan" 

 this subsoil is far from being porous in the usually accepted meaning of 

 the word. The same soil is found in all the plantations of this depart- 

 ment of the Station, and is most common in this part of Dakota. 



The varieties planted were box elder, white ash, black wild cherry, 

 honey locust, white oak, burr oak, red oak, black walnut, white walnut 

 or butternut, chestnut, hard maple, shell-bark hickory, basswood, and 

 black locust. 



Trees on the college laivn (pp. H-S). — " In Bulletin 'No. 1 the conditions 

 under which the trees on the college lawn are growing and the methods 

 of planting and culture were fully explained. The past season has im- 

 pressed me more fully with the value of some varieties named in that 

 bulletin, notably the white elm and the European larch." 



This article contains notes on the different varieties of trees gro-wing 

 on the college lawn. 



The forest tree nursery (pp. 8-12). — "In the spring of 1888 the follow- 

 ing varieties of trees, ranging in quantity from two hundred to two 

 thousand, were i)lanted in the nursery : European larch, yellow birch, 

 black wild cherry, European white birch, box elder, white ash, white 

 elm, Cottonwood, soft maple, white walnut, black walnut, white oak, 

 basswood, Scotch pine, white spruce, balsam fir, Norway spruce, Colo- 

 rado blue spruce, Douglas spruce, arbor vitaj, white pine, red cedar. 

 Black Hills native spruce {Picea alba), Black Hills native pine {Pinus 

 ponderosa), hemlock, red pine, gray pine. 



In addition to these, about five thousand cuttings, including Popu- 

 lus certinensis, P. pyramidalis, P. nolester, P. pyramidalis suavolens, Salix 

 laurifolia, S.fragilis, were planted." This article contains notes on the 

 trees in the nursery. 



The evergreens (pp. 12, 13). — "About ten thousand evergreens of the 

 varieties named in the bulletin were planted in the same way as the 

 deciduous trees." The methods of planting and culture are described, 



