CONTENTS 11 



Page 



Department Bulletin No. 1273. — The Bud Moth: 



Introduction 1 



Historical 1 



Synonymy 2 



Common name 3 



Food plants 3 



Distribution 4 



Means of dissemination 5 



Economic importance 5 



Other species of bud moth 5 



Descriptions of stages of the bud moth 6 



Seasonal history and habits 8 



Natural enemies 14 



Control 16 



Summary 19 



Literature cited 19 



Department Bulletin No. 1274. — Cockleburs (Species of Xanthium) 

 as Poisonous Plants: 



Purpose and scope 1 



Historical summary 2 



The cocklebur plant 5 



Experimental work 6 



Typical case of pig 18 6 



Discussion and general conclusions 7 



Symptoms in pigs 7 



Symptoms in sheep and cattle 12 



Symptoms in chickens 12 



Autopsy findings 12 



Microscopic changes in tissues 13 



Toxic and lethal dosage 15 



Time from feeding to appearance of symptoms 16 



Duration of sickness 16 



Effect of continued feeding 17 



Animals poisoned by cocklebur 18 



Part of plant poisonous 18 



Mechanical injury by burs 19 



Toxicity of dried plant 20 



Remedies 21 



Summary 22 



Bibliography 22 



Department Bulletin No. 1275. — Varietal Susceptibility of Oats 

 to Loose and Covered Smuts: 



Introduction 1 



Review of literature 1 



Characteristics of the oat smuts 5 



Field experiments 6 



Experimental procedure and results 6 



Discussion of results 29 



Greenhouse experiments 34 



Summary 36 



Literature cited 38 



