MORBISON 



37 



•-<B-« 



36 



IN 



35 



34 



_ x__x_ 



O 



Os 



-o- 



o 



o 



(D O 



-® 



(3 



c?— ®^$^-^- 







MACROTIS 

 (BILBY) 





MID 



8 



NOON 



•-^ 



20 



MID 



Figure 4. Daily T cycle in the bilby ( Macrotus lagotis ) . Different symbols 

 show successive periods of time. 



42 



40 — 



38 



32 



MACROTIS 



T^ IN 'C 



394 



