BY H. 



MALCRO WARDLAW, 



239 



In the case of Echidna ISo.l, it will be seen that, between 

 April 30th, and May 22nd, its morning- temperature varied 

 between 30-8° and 25-1°, except on May 19th, and 20th, when 

 very low body-temperatures were recorded; its afternoon-tem- 

 peratures varied between 32*5° and 27*6'C. On May 25th, the 

 first definite hibernation was noticed, the temperature of the 

 animal being very close to that of the air. Observation of the 

 animal's temperature was at once suspended in order not to dis- 

 turb the hibernation, but a partial awakening occurred on June 

 1st. The animal was again torpid next day, and died three days 

 later. 



In the case of Echidna No. 2, between April 30th and June 

 r2th, with the exception of June 4th, 5th, and 9th, when low 

 body-temperatures were observed, the morning-temperatures of 

 the animal varied between 32*1° and 25-1 °C., the afternoon- 

 temperatures between 33-4° and 30-8°C. The hibernation of 

 this animal was ver}^ erratic; the first definite signs of it were 

 observed on June 15th. The animal was torpid on June 15th, 

 June 18th, and from June 30th to July 2nd. The temperature 

 rose somewhat on July 7th, but fell again next day, and remained 

 almost at the level of the temperature of the air till the death of 

 the animal on July 10th. 



Between April 30th and June 22nd, Echidna No. 3 showed 

 no signs of hibernation. During this period its morning-tem- 



