INDEX. 13 



Bulletin 



North Dakota— No. Page. 



Stump Lake Bud Reservation, heron destruction by crows 621 35 



wheat — 



f 26— 27 



growing experiments 618< 42-46 



production, and per cent of durum wheat, 1909-1916 618 6-9 



Nurse crops, seeding with clover, Washington, Oregon, and Idaho, 



methods and results 625 6-8 



Nursery, spraying experiments for control of citrus thrips 616 31-36 



Nutrition, publications, list 612 12 



Nuts, destruction by crows 621 52 



• - f21 22 24 



Nyssa, preservation, characteristics, and results of treatment 606<r>r' J J 



Oak- 

 quantity used in manufacture of wooden products 605 9 



spp. , preservation, results of treatment 606< Zk oi Z\ 



Oats, losses from crows 621 49 



Oil, oleo, digestibility, dietary experiments 613 12-15 



Oleo, oil and stearin, digestibility, dietary experiments 613 12-17 



Olive cream cheese, nature, note 608 40 



Orange — 



bud variation, study 624 120 



navel — 



bud variation, studies in California, bulletin by A. D. 



Shamel, L. B. Scott, and C. S. Pomeroy 623 1-146 



strains of Washington variety, descriptions and records. . . . 623 14-140 



orchards, spraying for citrus thrips, experiments 616 29-40 



propagation, bud wood selection 623< -, ,Z_, > 



trees — 



injury by citrus thrips 616 7 



performance records, methods of keeping 623 9-13 



spraying for citrus thrips, experiments 616 29-40 



topworking to eliminate undesirable strains < fi 24 118-11 q 



Valencia, history 624 2 



Washington navel — 



history, distribution, and development 623 2-3 



origin, history and value 623 2-3 



Oranges — 



fi24 7-8 



injury by citrus thrips, nature and extent 616 3-7, 9, 20 



navel , strains of the Washington Na vel , d escription an d records . . 623 14-140 

 Valencia — 



bud variation, studies in Calif ornia, bulletin bv A. D. Shamel, 



L. B. Scott and C. S. Pomeroy ". 624 1-120 



strains, descriptions and comparisons 624 12-115 



yields of different varieties, records and studies 624 7-106 



Washington Navel — 



production, in carloads I ^a I 



yields, studies and records in California 623 12-140 



Orchard management, Yakima Valley, Wash., methods and cost, 



1915. 614 1-75 



Orcharding, apple, cost in Yakima Valley Washington, bulletin by 



G. H. Miller and S. M. Thomson 614 1-75 



Orchards, citrus, spraying for citrus thrips 616 40 



Oregon, wheat-growing experiments in semiarid area 618 54-55 



f 19-22, 



Orthoptera, destruction by crows 62l{ 42, 43, 



I 59-60,88 



Osage orange, quantity used in manufacture of wooden products 605 16 



Owls, enemies of crows 621 71 



