DOCUMENT PRICE LIST 16, STH EDITION 31 



YEARBOOK Continued. 

 1910 Continued. 



CONTENTS Continued. 

 *535. Progress and present status of good roads movement in United 



States. Paper, 5c. 

 *536. Grading of cream. Paper, 5c. 



537. Insect enemies of tobacco in United States. 



538. Bituminous dust preventives and road binders. 



*539. Respiration calorimeter and results of experiments with it. Pa- 

 per, 5c. 



540. Increased yields of corn from hybrid seed. 



541. Utilization of crop plants in paper making. 



542. Injuries to forests and forest products by roundheaded borers. 



543. Cheese and other substitutes for meat in the diet. 



544. Value of shellfish industry and protection of oysters from sewage 



contamination. 



545. Migratory movements of birds in relation to weather. 

 *546. Cooperation in handling and marketing of fruit. Paper, 5c. 

 *547. Mountain snowfall observations and evaporation investigations in 



United States. Paper, 5c. 



548. Fire prevention and control on national forests. 

 *549. Promising new fruits. Paper, 5c. 

 *550. Precooling of fruit. Paper, 5c. 

 551. Camphor cultivation in United States. 



*552. Effect of present method of handling eggs on industry and prod- 

 uct. Paper, 5c. 



553. Agricultural statistics, 1910. 



*554. Live stock and miscellaneous agricultural statistics, 1910. Pa- 

 per, 5c. 



*555. Statistics of principal crops, 1910. Paper, 5c. 



Index to Yearbooks, 1906-1910. Paper, 15c. A 21.3 : 10 



1911. Cloth, $1.00. 

 ' CONTENTS : 



Report of Secretary. 

 *556. S. A. Knapp. Paper, 5c. 



557. Our mid-Pacific bird reservation. 



558. Reduction of waste in marketing. 



*559. Primary principles in prevention and treatment of disease in 



poultry. Paper, 5c. 



*560. Fibers used for binder twine. Paper, 5c. 

 *561. Relation between rotation systems and insect injury in South. 



Paper, 5c. 



*562. Weather Bureau and cranberry industry. Paper, 5c. 

 563. Important American soils. 

 *564. Bird enemies of codling moth. Paper, 5c. 



565. Some misconceptions concerning dry farming. 



566. Tree planting by farmers. 



*567. Seasonal distribution of labor on farm. Paper, 5c. 



*568. Some results of farmers' cooperative demonstration work. Pa- 

 per, 5c. 



*569. Decomposition and its microscopical detection in some food prod- 

 ucts. Paper, 5c. 



*570. Possibilities and need of supplemental irrigation in humid regions. 

 Paper, 5c. 



*571. Crawfish as crop destroyers. Paper, 5c. 



572. Rotations in corn belt. 



573. Winds of United States and their economic uses. 



574. Water economy of dry-land crops. 



*575. Business aspect of national forest timber sales. Paper, 5c. 

 *576. Present outlook for irrigation farming. Paper, 5c. 

 577. Commercial methods of canning meats. 



*578. Value of snow surveys as related to irrigation projects. Paper, 5c. 

 *579. Cotton improvement on community basis. Paper, 5c. 



580. Plant introduction for plant breeder. Paper, 5c. 



581. Promising new fruits. 



*582. Green vegetables and their uses in diet. Paper, 5c. 



The articles starred (*) can also be obtained in separate form at the price given. 



