244 



TEMPERATURE OF ECHIDNA ACULEATA, 



Table ii. — Continued. 



In Table ii., a record of the weight of the animals has been 

 added, so that some idea may be gathered of the general state of 

 their health during this period of observation. 



The morning-temperatures of Echidna No. 6 will be seen, from 

 the above Table, to have varied between 33-2° and 25-8°C., the 

 afternoon-temperatures between 34*0" and 30-8°C. The weight 

 of the animal also showed very large fluctuations, its lowest value 

 being 1540 gms., its highest 2100 gms. The weight, on the whole, 

 increased, however, and the animal was still living and in good 

 health at the end of the period of observation. 



Echidna No. 8 lived only a short time while under observation. 

 During this time, its weight steadily fell. Its morning-temper- 

 atures varied between 31*0° and 24-6°C., its afternoon-temper- 

 atures between 33-8 and 32-0"C. 



Echidna No. 9 also did not live long, and its weight, too, 

 steadily fell. Its morning-temperatures varied between 30-8° and 

 29-0°C., its afternoon-temperatures between 31-5° and 29-7°C., 

 except on the last day, when the animal was dying, and its tem- 

 perature was almost at the level of that of the air. 



Echidna No. 1 also decreased in weight during the period of 

 observation, although it lived about thrice as long as Nos.8 and 

 9. Its morning-temperatures varied between 32*2° and 24-4"C., 

 its afternoon-temperatures between 33-5" and 30-6°C. 



The observations recorded in the above Tables, with the excep 

 tion of those made on Echidna No. 4, have been plotted out 

 graphically in order to render their meaning more evident. In 



