con 1 1.\ rs 
Introduction 
Heat ion of held mice 
and distribution 
Habits of Held mice . _____ 
- and trails 
Breeding habits 
Pood habits _______ 
■Three t.\ pical species 
I. The common meadow mouse i Uicrotus pennsylvanicus) 
II. The prairie mouse {Microtus ochrogaster) 
III. The pine mouse (Microtus pinetorum scalopsoides) 
Damage by field mice.. ______ 
Damage to meadows and pastures 
Damage to grains and forage 
1 damage to garden crops 
Damage to small fruits 
Damage to nursery stock 
Injury to orchards 
Injury to forest trees 
Damage to parks and lawns 
Studies in an orchard 
Tin" relation of field mice to the farmer 
R< ports from fanners and others.. __ 
Reports from nurserymen and orchardists 
Economic status of field mice 
Repression of field mice — natural agencies 
Climatic influences 
Epidemic diseases 
Natural enemies of field mice. .... 
Mammals that destroy field mice 
Birds that destroy field mice 
Snakes 
depression of field mice — active measures 
Trapping 
Cultivation 
other mechanical devices— __ 
Poisoning 
Strychnine 
Other poisons..- _ 
Additional methods of poisoning.. 
Fumigation _. 
Micro-organisms 
Recommendations to farmers 
Prevention of injury to orchards and nurseries __ 
Remedies for injured trees.. 
Summary 
Literature 
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