30 DOCUMENT PRICE LIST 16, STH EDITION 



YEARBOOK Continued. 

 1908 Continued. 

 CONTENTS Continued. 



486. Relations between birds and insects. 



487. Types of farming in United States. 



488. Some things that the grower of cereal and forage crops should 



know about insects. 



489. Plant food removed from growing plants by rain or dew. 



490. Intensive methods and systematic rotation of crops in tobacco 



culture. 



*491. Use of poisons for destroying noxious mammals. Paper, 5c. 

 492. Instruments for making weather observations on the farm. 

 *493. By-products of sugar beet and their uses. Paper, 5c. 

 *494. Development of farm crops cesistant to disease. Paper, 5c. 



495. Soil mulches for checking evaporation. 



496. Promising new fruits. 



497. Directory for farmers. 



498. Agricultural statistics, 1908. 



499. Principal injurious insects of 1908. 



*500. Progress for game protection in 1908. Paper, 5c. 



1909. Cloth, $1.00. 

 CONTENTS : 



Report of Secretary. 



*501. Farmers' cooperative demonstration work. Paper, 5c. 

 502. Methods and costs of marketing. 

 *503. Conditions influencing production of sugar-beet seed in United 



States. Paper, 5c. 



*504. Plants useful to attract birds and protect fruit. Paper, 5c. 

 505. Problems of irrigation farmer. 

 *506. Pocket gophers as enemies of trees. Paper, 5c. 



507. Functions and value of soil bacteria. 



508. Tuberculosis of hogs and how to control it. 



*509. Farming as occupation for city-bred men. Paper, 5c. 



510. Introduction of Hungarian partridge into United States. 



511. Future wheat supply of United States. 



512. Vegetable seed growing as a business. 



513. Information in regard to fabricated wire fences and hints to 



purchasers. 



514. Methods of applying water to crops. 



*515. Progress in methods of producing higher yielding strains of corn. 

 Paper, 15c. 



516. Agriculture in coal regions in southwestern Pennsylvania. Pa- 



per, 5c. 



517. Opportunities in forest planting for farmers. 



*518. Comforts and conveniences in farmers' homes. Paper, 5c. 

 *519. Prevention of frost injury to fruit crops. Paper, 5c. 



520. Handling deciduous fruits on Pacific Coast. 



521. Promising new fruits. 



*522. How farmers may utilize special warnings of Weather Bureau. 



Paper, 5c. 



523. Injuries to forest trees by flat-headed borers. 

 *524. Agricultural statistics, 1909. Paper, 5c. 



1910. Cloth, $1.00. 

 CONTENTS : 



Report of Secretary. 



525. Management of 2d-growth sprout forests. 



526. Agricultural duty of water. 



527. Community work in rural high school. 



528. Supply and wages of farm labor. 



*529. Inspection of inserted food and drug products. Paper, 5c. 



530. Nitrogen-gathering plants. 



531. Some of more important ticks of United States. 



*532. Eradication of cattle tuberculosis in District of Columbia. Pa- 

 per, 5c. 



*533. Game market of to-day. Paper, 5c. 

 534. Progress in saving forest waste. 



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



