ANECDOTES ABOUT CATS 259 



in the glass, it seems at length to be convinced of the 

 real nature of the image. 



" The same is the case with dogs at an early age. 



" The sleep of the cat, though generally very slight, 

 is, however, sometimes so profound that the animal 

 requires to be shaken pretty briskly before it can be 

 awakened. 



" This particularly takes place chiefly in the depth of 

 winter, and on the approach of snowy weather. At such 

 periods, as well as at some others, the cat diffuses a 

 fragrant smell somewhat like that of cloves. 



"It has been remarked that the eyes of cats always 

 shine with a bright light when they are in the dark. 



"It is generally supposed they can see in the dark, 

 but though this is not absolutely the case, it is certain 

 they can see with much less light than most other 

 animals, owing to the peculiar structure of their eyes, 

 the pupils of which are capable of being contracted or 

 dilated in proportion to the degree of light by which 

 they are affected. 



" In the day time the pupil of the cat's eye is 

 perpetually contracted, and sometimes into a mere 

 line, for it is with difficulty that it can see by a 

 strong light ; but in the twilight the pupil resumes 

 its natural roundness, and the animal enjoys perfect 

 vision. 



"It appears somewhat singular that on plunging the 

 head of a cat into water, although the animal be exposed 

 to a very bright light the pupil should become im- 

 mediately expanded to all its width. 



