THE WATER FLEA 215 
the glazed lid of the cell, and he is ready for exam- 
ination. A low magnification is sufficient. 
He is now well in focus, and making lively efforts 
to get out of his prison. That little fellow, in 
Nature, is hardly more than a sixteenth of an inch 
long, but under 
even a low power 
of the microscope 
he looks quite 
monstrous and 
formidable. You 
can make out his 
parts ; they show 
up distinctly. 
Notice the small 
head, which 
appears to be 
beaked, and bears 
two pairs of 
branched feathery 
antennae, or 
‘* feelers,’? which 
the creature flour- 
ishes ineffectually 
in his cell. Then Fig. 56.—Femate Water Fue 
look at the eye; (DAPHNIA PULEX). 
this is rounded “»tenna; b.c., brood chamber; c., eye; 
; h., heart. 
and consists of 
something like twenty lenses. Of course, he has a 
mouth, which bears a lip, has two mandibles and a 
pair of jaws. 
You have no difficulty in examining the creature’s 
body ; it is quite transparent, and you can see all 
