FIELD CROPS. 131 



(Aristida longiscta), tall grama grass (Atheropogon curtipendula) , grama 

 grass {Bouteloua oligostachya), slough grass (Beckmannia enccceformis). 

 Porter brome grass (Brotmis porteri), Richardson brome grass (B. richard- 

 sonii), barren brome grass {B. sterilis), buffalo grass (Buchloe dactyloides) , 

 Canada bent grass (Calamagrostis canadensis), purple reed bent (C. piir- 

 purascens) , long leaved reed grass {Calamovilfa longifoUa), water whorl grass 

 (Catabrosa aquatica), green foxtail {Chwtochloa viridis), tufted hair grass 

 (Dcschampsia ca'spitosa), alkali grass (DistichUs spicata), early bunch grass 

 (Eatonia oMusata), Canadian wild rye {Elymtis canadensis), giant rye grass 

 {E.condensatus), Indian millet (Eriocoma cuspidata), King fescue ( F est iica con- 

 finis), sheep fescue (F. ovina), short-leaved fescue (F. ovina hrevifoUa) , Wolf 

 false oat (Graphephorum wolfii), squirrel-tail grass (Hordeum jubaturn), little 

 barley (H. pusillum), excellent melic grass (Melica spectabiUs), false buffalo 

 grass (Miinroa squarrosa) , reed meadow grass (Panicularia amcricana) , nerved 

 mauna grass (P. nervata), old witch grass {Panicum capillare), switch grass {P. 

 rirgatum), mountain timothy (Pltleum alpinum), timothy {P. pratense), 

 mountain spear grass (Poa alpina), arctic si^ear grass (P. arctica), Buckley 

 spear grass {B. bucldeganu), mountain blue grass (P. epilis), long-stemmed 

 spear grass (P. longipedunculata), Patterson spear grass (P. pattersonii) , nod- 

 ding blue grass (P. reflexa), northern spear grass (P. nemoraUs) , downy oat 

 grass (Trisetiim suhspicatum) , Texas crab grass (Schedonardus panicnlatus), 

 orchard barley {8if anion brevifolium) , western cord gi-ass (Spartina gracilis), 

 drop seed (Sporobolus brcvifolius), line top salt grass (S. airoides), sand drop 

 seed (S. crijptandrus), Canadian needle grass (Stipa columbiana), needle grass 

 (8. comata), woolly sedge {Carex lanuginosa), Liddon sedge (C. liddonii, C. 

 acutina), water sedge (C. aquatilis), giant sedge (C. aristata), black sedge (C. 

 atrata), the beautiful sedge (C hcUa), mountain sedge (C. f estiva). Hood 

 sedge (C hoodii), long-beaked sedge (0. longirostris) , the new sedge (C. 

 nova), western sedge {C. occidentalis) , Raynold sedge (C. raynoldsii), the 

 Nebraska sedge (C. nebraskensis), hillside sedge (C siccata), alpine or cliff 

 sedge (C. scopulorum) . bottle sedge (C. utriculata), variable sedge (C. vari- 

 abilis), spike rush (Eleocharis palustris), small-flowered wood rush {Luznla 

 parvi/lora) , spike wood rush (L. spicata). great bulrush (Scirpus laciistris), 

 small-fruited bulrush (8, ■mierocarpus) , Merten rush (Junciis mertensianus), 

 wire grass or Baltic rush (J. balticus), knotted rush (J. nodosus), Hocky INIoun- 

 tain rush (J. saximontanus) , Parry rush {J. parryi), alfalfa (Medicago saliva), 

 Cai'olina milk vetch {Astragalus carolinianus) . matted clover (Trifolium dasy- 

 phylltim,). Parry clover (T. parryi), Hooker sandwort (Arenaria Jiookeri), 

 winter fat (Eurotia lanata). 



In general, the percentage of protein and nitrogen-free extract was found 

 to increase, aud that of crude fiber to decrease, with the altitude. 



Electroculture, T. Griffet (Rev. G6n. Chim., 13 {1910), A'O. IJ,, pp. 2'il-2J,5, 

 figs. 3). — The earlier experiments in electroculture in Europe are briefly re- 

 viewed, and the results of recent experiments are reported. Different installa- 

 tions for the purpose of influencing plant growth by means of atmospheric 

 electricity are briefly described. The results seem to indicate that atmospheric 

 electricity is capable of exei'ting a marketl influence in crop production. 



Experiments in electroculture, Gerlach and G. Erlwein {Elektrochem. 

 Ztschr.. 11 {1910). Nos. 2, pp. 31-36; 3. pp. 66-68, figs. 6).— A description in 

 detail is given of the electrical installation used in these experiments, and 

 the results with barley and potatoes are reported. With both crops the increase 

 in yield was insuflicient to defray the expense of the electrical treatment. 



Electroculture, F. Weis {Tidsskr. Landokonomi, 1910, No. 2, pp. 136-161). — 

 A resume of investigations of the subject to date is given, leading to the con- 



