TABLE OF CONTENTS. XX111 



CHAPTER V. 



ABNORMAL NEEDLE-CAST. 



PAGE 



1. Description -. . , . 685 



2. Modifying factors 686 



3. Geographical range . . 687 



4. Causes f . 688 



5. Damage done . . . . . . . ..... 690 



6. Treatment . 690 



CHAPTER VI. 

 DAMAGE BY ACID FUMES FROM FURNACES, &c. 



1. Description of injury . . . . ' . . . . 695 



2. Injurious components of smoke 696 



3. Damage done 699 



4. Methods of recognizing damage 705 



5. Protective measures . 707 



6. Estimation of damage ......... 707 



