18 

 19 



INDEX TO BULLETINS 1 TO 100. 79 



Bulletin. I'iifjo. 



Nitroe-en fixation b\^ legumes, paper l 72 23-30 



100 73-83 



liow and where supplied to legumes 71 31-34 



how fixed by legumes 71 9-12 



infection by legumes without forming nodules 71 36-37 



-S'ec also Bacteria, Legumes, and Soil inoculation. 



Nodule formation, eflEect of lime 100 74-76 



soil conditions 100 76-79 



See also Bacteria, Legumes, and Nitro- 

 gen. 



Nomenclature, apple, huUetin 36 1-395 



fungi, bulletin 8 1-31 



lettuce, bulletin 69 1-103 



medicinal plants, wild, bulletin 89 1-76 



peppers, bulletin 6 1-19 



soy beans, bulletin 98 1-30 



vegetables, bulletin 21 1-402 



See also Names. 



North American species of Agrostis, bulletin 68 1-68 



Leptochloa. bulletin 33 1-24 



Spartina, bullrtiii 9 1-16 



Dakota, analyses of soils 1 20 



experiments with hairless Orel clover 95 35-39 



Northwestern States, cultivated forage crops, bulletin 31 1-28 



description of regions 31 9-15 



Notes on Egyptian agriculture, bulletin 62 1-61 



Novelties and specialties, seeds, distribution circulars 25 26-46 



Nursery trees frozen 51 



Nurserymen, suggestions regarding apple grafts 100 



seedling apple trees 90 10-17 



Nutrients, mineral, in plants, bulletin 45 1-70 



Nuts, Spanish almonds, bulletin 26 1-16 



() 



Oakley, Russell Arthur, paper entitled "Orchard grass" 100 



Oat-grass, tall, in Nebraska .' 59 



Oats and wheat in central Texas 13 



in Algeria 80 



sown with red clover 94 



Observations on the mosaic disease of tobacco and its control, 



bulletin 18 



Oil of peppermint 90 



quality and quantity required for moisture determina- 

 tions of grain 99 



Okra. varieties 21 



Oliver, George Watson, bulletin entitled "Budding the pecan".. 30 



" S i 1 k w o r m food 

 plants : C u 1 1 i v a- 

 tion and propaga- 

 tion" 34 1-20 



"The propagation of 

 the Easter lily 



from seed" 39 1-24 



"The propagation of 

 tropical fruit trees 



and other plants".... 46 



Olives in Algeria 80 



Onion, varieties 21 



Onions in Egypt 62 



Orach, varieties 21 



Orange and pomelo, leaf-spot 52 



wither-tip 52 



See also Citrus fruits. 



leaf-rust of Agropyron and Elymus '. 63 



Orchard grass, paper 100 



2739— No. 101—07 6 



