VI CONTENTS. 



Page. 



Report of the Director of the Fixed Nitrogen Research Laboratory 495 



Introduction 495 



Establishment of the laboratory 496 



A comprehensive summary 505 



List of articles from the Fixed Nitrogen Research Laboratory in 



scientific and technical journals chronologically arranged to date.. 506 



Report of the Chief of the Division of Accounts and Disbursements 507 



Character of the work 507 



Work of the year 508 



Report of the Chief of the Division of Publications 515 



Summary 515 



New publications 518 



Field printing done on contract by printers outside the District of 



Columbia as of August 1, 1923 519 



Printing done at the Government Printing OflBce but charged to 



special funds of bureaus as of August 1, 1923 519 



Papers approved for publication in outside journals 519 



Editorial work 520 



Indexing work 520 



Distribution 521 



Mailing list work 522 



Illustrations work 523 



Addressing, duplicating, and mailing work 524 



Work of the operations section 525 



Report of the Office of Motion Pictures 527 



Growth of film distribution 527 



Better quality in films 529 



Needs of the work 530 



New films 530 



Purchases largest on record 531 



Report of the Office of Exhibits ^ 533 



Report of the Librarian 537 



Accessions 538 



Cataloguing 540 



Use of the Library 540 



Bureau and division libraries 541 



Bibliography 543 



Binding 544 



Exchanges and mailing lists 544 



Order work and bookkeeping 544 



Library staff 545 



Library class 546 



Economies 546 



Appendixes 547 



Report of the Director of the States Relations Service 553 



The movement for agricultural research in the United States 553 



Office of Experiment Stations 554 



Extension work 567 



The change in department organization affecting the States Relations 



Service 572 



A review of the work for the past year 573 



Report of the Federal Horticultural Board 615 



Introduction 615 



The pink bollworm 615 



Mexican border control 618 



European corn borer 619 



Japanese beetle quarantine 620 



Gipsy moth and brown-tail moth quarantine 621 



Date-scale eradication 622 



Revision of Hawaiian fruit-fly quarantine 623 



The can\phor scale 623 



Potato wart 625 



White pine blister rust quarantines 626 



Black stem rust of wheat 627 



Paddy rice quarantine 628 



Nursery stock, plant, and seed quarantine 628 



Cotton and cotton products quarantines 629 



