TABLE OF CONTENTS. 



:xxiii 



CHAPTER V. 



ABNORMAL NEEDLE-CAST. 



PAGE 



L Description ............ 680 



2. Modifyiiif^ factors .......... 6S() 



3. Geographical range GS7 



i. Causes 088 



o. Damage done ........... 090 



0. Treatment 01)0 



CHAPTER VI. 



DAMAGE BY ACID FUMES FKOM FURNACES, kc. 



1. Description of injury ......... (J'J.") 



2. Injurious components of smoke 096 



3. Damage done 699 



4. Methods of recognizing damage ....... 705 



5. Protective measures .."....... 707 



6. Estimation of damage 707 



