6 DEPARTMENT OP AGRICULTURE BULS. 251-275. 



Department Bulletin No. 267. — Methods op Wholesale Distribution of 



Fruits and Vegetables on Large Markets — Continued. Page. 



Summary. . . . 24 



Glossary of trade terms and expressions as used in this bulletin 26 



Publications available for free distribution ■. 28 



Publications for sale by the Superintendent of Documents 28 



Department Bulletin No. 268. — Crop Production in the Great Plains 

 Area: 



Introduction 1 



Climatic features of the Great Plains 3 



Soils of the Great Plains i 5 



Crops and cultural methods 5 



Results of methods tested with various crops 5 



Tillage practices 21 



Accessory tillage 24 



Regional adaptation of crops 26 



Conclusions 27 



Department Bulletin No. 269. — Farmers' Institute Work in the United 

 States in 1914, and Notes on Agricultural Extension Work in For- 

 eign Countries: 



Introduction. T 



General Status of Farmers' Institutes in the United States 2 



State Farmers' Institute reports 3 



Agricultural Extension work in foreign countries 7 



Officials in charge of Farmers' Institute work in the United States 14 



Statistics of Farmers' Institutes, 1914. . 16 



Department Bulletin No. 270. — General Experiments at the Williston 

 Station: 



Introduction l 1 



Description of the substation 2 



Experimental methods 8 



Experiments with wheat 13 



Experiments with oats 24 



Experiments with barley 28 



Experiments with flax 33 



Experiments with minor cereals 33' 



Summary . .".' 34 



Department Bulletin No. 271. — Dates of Egypt and the Soudan: 



Introduction 1 



Nile Valley dates and their climatic environments 2 



Description of varieties. i . . , 17 



Summary 39 



Department Bulletin No. 272. — The Southern Cypress: 



Importance :' 1 



Geographical and commercial range 2 



Present supply and annual cut 3 



Physical and mechancial properties of the wood 6 



Uses 3 10 



Cypress lumbering ll 



Markets and lumber prices 17 



Stumpage 18 



Life history of the tree 19 



Cypress stands 46 



Forest management 50 



Appendix .... 70 



Department Bulletin No. 273. — Dispersion of Gipsy-moth Larvae by the 

 Wind: 



Introduction 1 



Previous investigations on dispersion of the gipsy moth 2 



Former investigations of hairs on small larvse 3 



Studies of structure and function of acuminate and vesicular hairs 4 



Scope of investigations on wind dispersion 6 



Hatching of eggs in relation to wind dispersion of first-stage larvae 7 



Longevity of first-stage larvae after becoming entrapped in tanglefoot 8 



Screen experiments at Salisbury Beach, Mass., in 1913 8 



Continuation of screen experiment at Salisbury Beach, Mass., in 1914 ,10 



