fiG 



DR SUTHERLAND SIMPSON AND DR J. J. GALBRAITH ON 



kept in a large wire cage, 4 metres long, 5 high, and 1^ wide, and were allowed 

 to move about freely within. The room was well ventilated, and the temperature 

 ranged between 20° C. and 27° C. (70° F. and 80° F.). It was soon found that a 

 comparatively slight amount of muscular exercise was sufficient to cause a very 

 appreciable rise in the temperature, and to eliminate this important source of error, 

 only quiet animals were used which would submit to the operation without struggling. 

 Half-an-hour before a reading was to be taken they were captured and each placed in a 

 small cage by itself. In many cases they were so tame that the temperature could be 

 taken by a single observer without any help, but when necessary they were held on the 

 lap of an assistant, not on account of their struggling, but to prevent the thermometer 

 being broken by any sudden, unexpected movement At first most of the observations 

 were made between 5 and 6 p.m., a few between 9 and 10 a.m. and 2 and 3 p.m. 

 respectively, but later, as will be shown, they were made continuously at short intervals 

 throughout the twenty-four hours. 



Eesults. 



Our results are given in tabular form as they were recorded, and from these a series 

 of averages have been obtained from which some definite conclusions have been arrived 

 at. This method of presenting it will show how the subject developed in our hands, 

 and how we were led to make it a much more elaborate and laborious investigation 

 than we had originally intended. The readings are recorded in degrees centigrade. 



MONKEY I. (Macicus rhcesus). 

 o Young Adult. 



1901. 



< 



A 



387 



'o 



\4 



4-3 

 O 

 CD 



a" 



o 

 o 



Feb. 8th, 



5.30 p.m. 



38 6 



38-4 



38-4 



38-4 



23-3 



,, 9th, 



2 ,, 



38-0 



38-1 







38-0 



23-3 



,, 10th, 



5 



39-2 



39-2 



38-9 





389 



20-6 



„ 11th, 



5.30 ,, 



38-8 



38-6 



38-5 



38-4 



38-6 



22-2 



„ 12th, 



10 a.m. 











38-1 



24-4 





5 p.m. 



38-9 



39 



38 7 



38-9 



38-8 



22-8 



,. 13th, 



5 



38-1 



38-3 



38-1 



382 



38-2 



225 



,, 14th, 



9.30 a.m. 











37-9 



217 



„ loth, 



9.30 ,, 











377 



25-0 





5.30 p.m. 



37-9 



37 8 



37-9 



377 



38-0 



23 -9 



,, 16th, 



2 



38-0 



38-1 



37-8 



37-8 



37-9 



25-0 



„ 21st, 



5 



388 



38-9 



387 



38-5 



38 7 



26-4 



„ 26th, 



2.30 ,, 



38-8 



382 



37 9 



38-0 



37-9 



26-1 



Mean. 



Max. 



Min. 



Range. 



20 Observations- 



—Axilla 



. 38*5 



39-2 



37-8 



1-4 



17 



Groin 



. 38-3 



38-9 



377 



1-2 



13 



Rectum 



. 1 382 



38-9 



377 



1-2 



13 



Room 



. ' 237 



26-4 



20-6 



5-8 



MONKEY II. (M. dnicus). 

 ? Young Adult. 



1901. 



A 



V, 



es 

 (J 



39-4 



'3 



6 



OS 

 39-3 



'8 

 O 



i 



O 



B5 



a 



o 

 o 



Feb. 8th, 5.30 p.m. 



39-4 



39 3 



39 3 



23-3 



„ 9th, 2 



387 



38-6 



38-4 



38-4 



38-5 



23 8 



,, 10th, 5.30 ,, 



38-9 



391 



38-8 



38-8 



38-8 



20-6 



,, 11th, 5.30 ,, 



39-2 



39-3 



38-8 



38-9 



39-1 



22-2 



,, 12th, 10 a.m. 



38-4 



38-5 



38-3 



38-2 



38-2 



24-4 



,, 13th, 5 p.m. 



38-4 



38-5 







38-6 



22-5 



„ 14th, 9.30 a.m. 











38-0 



217 



,, loth, 9.30 ,, 



38-3 



38-4 



38-1 



38-2 



38-1 



25-0 



,, ,, 5.30 p.m. 



38-6 



38-8 



38-4 



386 



387 



23 9 



,, 16th, 2 



38-4 



38-5 



38-3 



38-4 



384 



25-0 





Mean. 



Max. Min. 



Range. 



18 Observations — Axilla 

 16 ,, Groin 

 10 ,, Rectum 

 10 ,, Room 



387 

 38-6 

 38-6 

 23-2 



39-4 38-3 

 39-3 38-1 

 39-3 38-0 

 25-0 20-6 



1-1 



1-2 

 1-3 

 4-4 





