CONTENTS. Ill 



AORICULTUBAL BOTANY. 



Pajce. 



A n oxpcrimontal Httidy of tho roHl ]>(:n<A in plants: HertfU, Howard 520 



Kxpf'rirncriUi in fon.in;,' native plants to blosH^jra during tho winter, liosendahl. . 521 



EfUici of slia/Ie on traimoiration and aBgimilation of t/>bacco, J£aB»clbrin^ 521 



Absorption of ion« by plants, Plate 521 



A n t^;(oni«m between ions in absorption of HuliH by plant«, Htiles and .J0r;;^en9en . . 52 1 



Determination of elernentw nef.cfiHary U) development of maize, J^in'/A 522 



Tlie <}thjTimH of plant«, Maz^ 522 



The influence of fluorin ujtou ve^jetation, Gautier 522 



lleHbitanee of growinj^ plants U) hydrfx:yanic acid furaitfation, Cotte 522 



Artion of diloroform and ether on inverfiion of Kux.harose in augar beet, Maz4. . 523 



1 nfluenre of naphthalin on growth in plants, Caecoari 523 



I'orrruition of Btarr.h in the embryo before maturity ot the Heed, Guilliennon.d. . 523 



Starrh reserve in birch and maple, iirown 523 



The orif<in <jt antho<,yanin in different y^lant organs, Moreau 523 



AntlKK-yanin formation and mineral nutritive comfx/nents, Czartkowski 523 



A nthfx.-yanin formation in rose leaves, !><; wscliin 523 



Anatomy of Avi/n/i m/jllisudm/i, with K\)fi('yA reference to taruxin, van der Byl. . 523 



J/iorhemiral inveBtigations of Banonins, Korsakoff 524 



<^'hemif,al p<i<';ullarity of dimorj>nic anthers of Jjo/jerHtrff/raw iv/lka, Harris 524 



Studies on the floral bio!f>gy and patholf^y of the olive, Petri 524 



Mutation en ma«Be. I'artlett 524 



Htudifis in pea varietif^s and hybrids therefrom, Kapx>ert 525 



A flora of Cuba, de la ifaza and Roig 525 



Geographv and vegetation of northern Florifla, Harper 525 



Plant ecology and floristics of Kalton Sink, Parish 525 



Movements of vegetation due Uj submersion and desiccation of land, MacDougal . 525 



The beliavior of certain micro-organiionfl in brine, Peirce 525 



FIELD CKOPS. 



"Root systems of agricultural plants, Masf;hhaupt 526 



TIjo influence of phosj>halic fertilizers on kxA development, Watt 526 



The geographical distribution of the field CTOps of India, Engelbrecht 526 



[Studies with field crops in Montana] 526 



Grasses and forage CTops 526 



Experiments on permanent grass land, 1915 526 



[Fertilizer expenmenta] 527 



Pasture grasses: Tljeir cultivation and management, Breakwell 527 



Ecolf^gy of the purple heath gra.^ ( Molinia ckrule/i), Jefieries 527 



A new HXiecies of forest grass ( SpodW[>of)fra T/j/yni), Hole 527 



Variety tests with millet and sunflowers, Fedorov 527 



The efiect of the association of legumes and nonlegumes, Ellett et al 527 



Vegetative regeneration of alfalfa, Wilson 528 



Exr^eriments with com in 1914, Sviuhchev and Aksenov 528 



Soil moisture and tillage for com, Mosier and Gustafson 528 



Tests of varieties of com, Ilarigcr 528 



Variety tests of com for 1914, Garren 529 



Refxyrt on variety tests of cotUjn for 1914, Winters 529 



Cauto tree cotton. Cousins 529 



Y^X'im controlling the ginning per cent of Indian cottone, Leake 529 



Fiber industry of liritLsh East Africa, Wigglesworth 530 



The growth and preparation of Italian hemp, Wigglesworth 530 



Investigations on hops. — V, On the aroma of hops, Schmidt 530 



Inverjtigations on hops. — VI, Lupulin in plants raised by crossing, Schmidt.. 530 



Investigations on hops. — VIII, Flowering of rjlants raise<^i by crossing, Schmidt. 530 



Re.?iilt3 of intro<lucing in 1013 fertilizers on lujnnes, Kulzhinskil. .". 531 



Seed potatoes from light soils on richer and heavier soila, Schneidewind 531 



Pictorial i)ractical potato growing, Wright and Castle 531 



The prot/>type of tne cultivated &jTgh\im3, Piper 531 



Variations in soy bean ino^;ulation, Voorhe<« 531 



The cultivation of sugar beet in Norfolk and Suffolk, Orwin and Orr 532 



Single-germ beet seed, Townsend 532 



Pieyxirt of the seedling expert, Cowgill 532 



Manurial experiments, Ternpany et al 532 



Catalytic or fecundating stimuli and mutation in Nicotiana, Splendore 533 



