8 DEPARTMENT OF AGRICULTURE BULS. 1251-1275 



Page 

 Department Bulletin No. 1265. — Scalding, Precooking, and Chill- 

 ing as Preliminary Canning Operations: 



Introduction 1 



Apparatus and methods used 3 



Experiments with specific food materials 4 



General discussion 33 



General summary 37 



Literature cited 39 



A list of pertinent nontechnical literature 43 



Department Bulletin No. 1266. — Agricultural Cooperation in 

 Denmark: 



Yearly average exchange rates on Danish krone ii 



Introduction 1 



History and development of Danish agriculture 4 



Danish agriculture to-day 7 



Principles observed in Danish cooperation 9 



Dairy industry and cooperation 14 



Bacon industry and cooperation 31 



Egg industry and cooperation 46 



Cooperative cattle export associations 54 



Cooperative buying 56 



Cooperative breeding associations 74 



Agricultural credit 81 



Miscellaneous cooperative organizations : 87 



Department Bulletin No. 1267. — The Rough-Headed Cornstalk- 

 Beetle : 



Introduction 1 



Economic history 2 



Distribution 3 



Life history 4 



General account 4 



Egg 5 



Larva 9 



Prepupa 16 



Pupa 17 



Adult 18 



Species likely to be mistaken for Euetheola rugiceps 26 



Ldgyrus gibbosus (De Geer) 26 



Dyscinetus trachypygus (Burm.) 28 



Cyclocephala spp 29 



Phyllophaga spp 29 



Natural enemies 29 



Control measures 31 



Elimination of waste lands and old pastures 31 



Pasturing with hogs 31 



Early planting 32 



Change of rotation 32 



Fertilizers 32 



Hand picking 32 



Late summer plowing 32 



Summary of control measures 32 



Literature cited 33 



Department Bulletin No. 1268. — Returns from Banded Birds, 

 1920 to 1923: 



Introduction 1 



Organized activities in bird banding 1 



Regional banding associations 3 



Returns reported to the Biological Survey 4 



Explanation of tables 5 



Tables of returns 6 



Index 54 



