DISCUSSION OF RESULTS. 



51 



and shallow rectal temperatures, by being roughly parallel but not coincident, 

 indicate clearly the thermal gradient already discussed in considerable detail. 1 

 In view of this fact and that previous experiments indicate a similar gradient, 

 a fall in temperature would be expected to follow the withdrawal of the ther- 

 mometers to a less depth. This fall in temperature is not, however, shown. 

 The discrepancy can be explained only by the fact that as the thermometers 

 were adjusted by the subject, which involved considerable movement on his 

 part, the statement regarding the depths of insertion is doubtless inaccurate. 



The measurements of the body-temperature in the different localities are 

 given in fig. 19, the curves being designated as usual. 



Experiment of January 12, 1911, with C. H. H. The deep and shallow 

 rectal thermometers were used, also a thermometer in each axilla, the axillary 

 thermometers being held in place by bandages. This experiment, like the 

 preceding, was divided into three parts so that a study could be made of the 

 rectal gradient and of the effect of preheating the axilla. In the first part of 

 the experiment, the depth of insertion of the shallow thermometer was 6.5 

 centimeters, and of the deeper thermometer, 9.5 centimeters; in the second 

 part, they were inserted 4 and 7 centimeters, respectively; and in the third 

 part, 0.75 centimeter and 3.75 centimeters, respectively. A ho-twater bottle, 

 at a temperature of 40 C, was placed in the left axilla 5 minutes before the 

 experiment commenced, the right axilla not being preheated. In the second 

 part of the experiment, the left axilla was again preheated by means of a hot- 

 water bottle at the same temperature as before, while in the last part the 

 hot-water bottle, at a temperature of 42.5 C, was used in the right axilla. 



During the experiment, the subject apparently slept at times, but usually 

 was lying awake and quiet. In the first part of the experiment, the left axilla 

 had a -temperature somewhat above that of the right, although the records for 

 the two thermometers remained parallel after constancy had been obtained. 



370"C 



36.8 



36.6 



36.4- 



362 



36.0 



8.30A.M. 8.50 9.10 9.30 9 50 10.10 10.30 10.50 11.10 11.30 11.50 12.10 P.M. 12.30 



Fig. 20. Temperature curves for experiment of January 12, 1911, with C. H. H. 



At the beginning of the second part, the temperature curve for the left axilla 

 was above normal, but fell rapidly until the two axillary curves became essen- 

 tially the same. In the third part of the experiment, the preheating of the 



'See p. 35. 



