they spend their night? They go somewhere 

 from the dew and cold ; but where ? 



There is a space about two inches deep be- 

 tween the window-sash and the net-frames in my 

 room. Some time ago I put a number of swifts 

 upon the netting, covered the window-sill with 

 sand, and thus improvised an ideal lizard- cage. 

 All I had to do to feed them was to raise the 

 window, drive the flies from the room on to the 

 netting, and close the sash. The lizards then 

 caught them at their leisure. 



Two days after they were transferred here, and 

 had begun to feel at home and fearless of me, 

 I noticed, as night came on, that they de- 

 scended from the netting and disappeared in the 

 sand. I put my finger in and took one out, and 

 found that the sand was much warmer than the 

 dewy night air. 



This was their bed, and this explained the 

 sleeping habits of the free, wild ones. The sand 

 remains warm long after the sun sets and makes 

 them a comfortable bed. Into the sand they go 

 also to escape the winter. They must get down 

 a foot or more to be rid of the frost ; and being 

 poor diggers, they hunt up the hole of some 

 [93] 



