/2V HUMAN PHYSIOLOGY. 167 



129. i. Why does a dry, cold atmosphere favorably 

 affect catarrh ? 



It tends to diminish inflammation in the mucous mem- 

 brane lining the nose and nasal passages. 



2. Why should we put on extra covering when we }ie 

 down to sleep ? 



The respiration and the circulation are then less active. 

 The fire in our corporeal stoves being low, we need extra 

 covering to preserve the warmth of the body. 



3. Is it well to throw off our coats or shawls when we 

 come in heated from a long walk ? 



No. We rather need to put on extra clothing at such 

 times to keep the body from cooling too rapidly. The 

 best hygienic teachers commend the throwing of a shawl 

 about the shoulders whenever we sit down to rest after 

 fatiguing labor. 



4. Why are close-fitting collars or neck-ties injurious ? 

 They impede both respiration and circulation. 



5. Which side of the heart is the more liable to inflam* 

 mation ? 



The left ; since that contains the red blood just oxygen- 

 ated in the lungs. 



6. What gives the toper his red nose ? 



(See Physiology, pages 125 and 173.) 



The congested state of the capillaries. 



