440 surgeons' reports — Illinois — seventh district. 



city of the chest, being 2.25 inches, is exactly the result obtained in the uieasuremeut of the chest 

 of the total number, viz, the 1,593 men examined, as will be seen by reference to the first table 

 given in this report. The preceding table really shows no increase of the mobility of the chest 

 with increased stature, though the latter is increased from Mr. Hutchinson's standard of five feet 

 seven inches by from five to eleven inches. Yet the mobility remains the same. We will let the 

 following table tell how much the mobility of the chest diminishes as the stature decreases below 

 Mr. Hutchinson's standard height of five feet seven inches. For this table I took seventy-three 

 names, as they stood in rotation on the surgeon's books, not making any selection, but measuring 

 from five feet four inches and a half down to five feet in height, with the following result : 



Table No. 3. 



J Measurement of chest. 



Average measurement of chest at inspiration, inches 33. 5 



Average measurement of chest at expiration, inches 31.25 



Average mobility of chest, inches 2. 25 



Number examined. 



Number of chests measured 73 



Meight. 



Average height of all measured, 73 in number, inches 63. 5 



Age. 



Average age of all examined, 73 in number, yearsj 20. 21 



This table shows the average height to be 03^ inches, or fully 9 inches less in stature than 

 those in the last table, and about 3.J inches under the average height of the whole number exam- 

 ined as seen in the first table. Yet we find the extent of mobility or vital capacity of the chest to 

 be 2^ inches, the same as in the preceding table, and still failing to sustain Mr. Hutchinson's and 

 Surgeon-General Hammond's rule, as laid down in the foregoing fjuotations. Surgeon Tripler takes 

 the position, as he says, based on his own observations, that the mobility of the chest is rather 

 inversely as the circumference than tlirectly as the height of the person. To test the correctness 

 ot this, I took the seventy-three names in table No. 2, all of them being from G feet to 6 feet 6 inches 

 in height, and divided them into two classes, placing those whose measurement of chest at inspira- 

 tion was over 30 inches in one class, and all those whose chests at inspiration measured 30 inches 

 and under in another class. Of the first, there were 39, and of the latter 34 names. In order to 

 show the result more clearly, I again place them in tabular form, as follows: 



Table No. 4. 



Measurement of chest. 



Average measurement at inspiration, inches 38. 1 



Average measurement at expiration, inches 35. 6 



Average extent of mobility of chest, inches .. . 2.5 



Number examined. 



Number of chests measured, over 30 inches at inspiration JO 



Average height. 



Average height of 39 men measured, the shortest man being 6 feet, and the 

 tallest one feet inches, inches 73 



