INFLUENCE OF PHILIPPINE CLIMATE ON WHITE MEN. 



437 



Table 'X.^Gomparative coverage pulse and respiration rates of 3i)1 blonds and 



301 Irufiettes, 1910-Oroup. 



Type. 



Second 

 quarter 1910. 



Third 

 quarter 1910. 



Fourth 

 quarter 1910. 



First 

 quarter 1911. 



Second 

 quarter 1911.. 



Average for 

 year. 



Pulse. 



Res- 

 pira- 

 tion. 



Pulse. 



Res- 

 pira- 

 tion. 



Pulse. 



Res- 

 pira- 

 tion. 



Pulse. 



Res- 

 pira- 

 tion. 



Pulse. 



Res- 

 pira- 

 tion. 



Pulse 



1 



Respi- 

 ration. 



19.1 

 19.4 



Blond 



Brunette . 



77.0 

 77.6 



19.3 

 19.4 



77.8 

 76.7 



19.2 

 19.4 



77.5 

 77.6 



19.1 

 19.2 



77.1 

 77.3 



19.1 

 19.5 



77.0 

 77.2 



19.0 

 19.4 



77.3 

 77.3 



It is shown by the tables that the average pulse rate for the year is 

 the same for both complexion types in the 1910-Group. In the 1909- 

 Group it is two beats nearer the normal Temperate Zone standard for the 

 blonds than it is for the brunettes. The quarterly variations are in^- 

 considerable and variable, first one complexion type and then the other 

 being the higher. For both types the rate is considerably above the 

 accepted normal average for cool countries, the higher rate for the 

 1909-Group being, in our opinion, due to the fact that most of these 

 observations were made immediately after the men returned from drill or 

 a practice march. The respiratory rates on the average are a few tenths of 

 a respiration lower for the blonds than for the brunettes, but for both 

 types and at all quarterly observations are considerably higher than the 

 accepted normal of 14 to 18 per minute for healthy adults in Europe 

 and America. As would be expected an increase in the frequency of 

 the pulse and the respiration go hand in hand and the increase of both 

 rates in the Tropics is in accord with the observations of Jousset, Plehn, 

 and others, but differs from the experience of Eattray. (7) The conclu- 

 sion was reached that the brunettes show no advantage over the blonds 

 as regards either pulse or respiration rates. 



Systolic blood-pressure. — Nearly all the observations were made with 

 che soldiers in the sitting posture. At a few posts the readings were 

 taken when the men were reclining, but as this was done with equal 

 frequency among the blonds and among the bmnettes it does not affect 

 the comparison for the two types, even if it were generally accepted, 

 (which is not the case) that there is a material difference in the pressure 

 as a result of these changes in position. (6) The instrument used was 

 Cook's modification of the Eiva-Rocci apparatus, with an 8-centimeter 

 cuff. By a careful comparison of the same instrument on several hun- 

 dred men, using both an 8-centimeter and a 12.5-centim'eter armlet, it 

 was found that the average reading with the latter was 8 millimeters 

 lower than with the former. Therefore, in the tables the averages have 

 been reduced to the basis of a 12.5-centimeter cuff by deducting 8 milli- 

 meters from the actual findings. 



