1076 



THORAX. 



the term "gained weight'* should be under- 

 stood as weight superadded to his usual 

 weight, or mean weight in the above Table. 

 Thus, if a man may lose weight below his 

 usual weight, he should gain above his usual 

 weight before he can be said to have gained 

 weight. 



The effect of weight in diminishing the re- 

 spiratory volume, need not in the least disturb 

 the observer, when testing the lungs through 

 the measurement of the vital capacity, with re- 



ference to phthisis or any other chest disease. 

 For collateral observations and the history of 

 the case, will sufficiently protect him from such 

 difficulty. We see that the weight increases 

 at so much per inch ; we have no doubt that 

 by extended observations it will be found 

 to be regular through the whole series of 

 heights, and that it will be found to increase 

 7 Ibs. for every inch of stature. We know that 

 the respiratory power increases in a similar 

 arithmetical relation. We do not mean that 



