﻿6 DEPARTMENT OP AGRICULTURE, BULLS. 1-25. 



Department Bulletin No. 21. — The Commercial Fattening of Poultry. Page. 



Introduction 1 



The feeding experiments 2 



Details concerning the feeding 15 



Fattening hens 20 



Individual variation in fattening chickens ..'. 24 



Mixing machines and other labor-saving devices 25 



Advantage of the portable feeding battery 25 



Expert labor 25 



Grading poultry 26 



Shrinkage in dressing 26 



Initial cost of chickens as affecting profit in fattening 27 



Relation of grain fed to manure produced 27 



Digestible protein and energy value of the rations 28 



Comparison of 'experiments of 1910, 1911, and 1912 29 



Conclusions 30 



Appendix 32 



Department Bulletin No. 22. — Game Law's for 1913. 



Introduction 1 



Legislation in 1913 2 



New laws passed in 1913 10 



Seasons 17 



Regulations for the protection of migratory birds 17 



Open seasons...: 22 



Sale 43 



Limits 47 



Licenses for hunting and shipping game. . 50 



Department Bulletin No. 23. — Vitrified Brick as a Paving Material 

 for Country Roads. 



Introduction 1 



The raw materials 2 



The manufacture 3 



Physical characteristics 4 



Testing the brick 5 



Construction 8 



Cost of brick pavements 18 



Maintenance of brick pavements 20 



Typical specifications for the construction of brick roads 21 



Conclusion ! 27 



Appendix 29 



Department Bulletin No. 24.— Cottonwood in the Mississippi Valley. 



Importance of cottonwood 1 



Annual cut and present supply 2 



Character of the wood 3 



Uses 4 



Stumpage values and logging costs 6 



Range 10 



Botanical characteristics 11 



Silvical characteristics 12 



Character of stands 18 



Form and growth of individual trees 22 



Growth and yield of stands 23 



Management 26 



