96 GIBBS. 



highest, except the thigh temperature of the Igorot recorded in 

 Table III, were registered by the black skin of a Negro and were 

 in several measurements 2°. 4 above blood temperature. The 

 thigh of the Igorot showed the remarkable temperature of 52°. 7. 

 The Igorots never wear clothing upon their legs, which are con- 

 sequently always exposed to the weather. Comparing the Negro, 

 the Filipino, and the Canadian, the temperatures are highest in 

 the order named, and in the case of the two Igorots and the 

 American the final temperatures were very close together, with 

 one Igorot higher and one lower than the American. These 

 comparisons, recorded in Tables III and IV, are the most accurate. 

 They were made after a number of other series had been com- 

 pleted and the technique and conditions were as nearly perfect 

 as possible, due to the skill of those who assisted me in almost 

 all of the measurements and the handling of the subjects ; namely, 

 Dr. D. G. Willets, Mr. F. T. Eddingfield, Professor M. V. del 

 Rosario, and my Filipino assistant, all of the Bureau of Science 

 or University of the Philippines. A comparison of these results 

 with Aron's measurements upon four subjects recorded in Table 

 VIII, page 123, of his article shows some noteworthy differences. 

 My measurements, made on April 29, give distinctly higher tem- 

 peratures for the dark skin than for the light-colored one. 



The variations between my results in Baguio and Aron's in Manila 

 may be accounted for, in part, by the fact that almost all of Aron's 

 measurements were made upon parts of the skin which are constantly 

 exposed, while mine in the cases above cited were on the back, which is 

 always covered. Even the Igorots employed in my experiments, always 

 wore coats of light material. 



The preliminary measurements upon portions of the skin constantly 

 exposed to the weather; namely, the cheek, forehead, nose, neck, and 

 arm, using various subjects, in the sun and shade, are not strictly com- 

 parable for the reason that they were made on different days and at 

 different times of the same day. The sunlight and other conditions vary 

 so frequently that accurate comparisons can be made only when the 

 results are obtained almost simultaneously. Moreover, the figures recorded 

 in Tables I and II, were secured in the early stages of the work before 

 the best technique was adopted. 



