STICKLEBACKS. 125 
approaches the object of his affections, most likely 
tells her all about his house and its comforts, 
hints delicately at his readiness and ability to 
defend her children against every enemy, vows 
unfailing fidelity, and, in lover-fashion, promises 
as much in a few minutes as would take a life- 
time to fulfil. Of course she listens to his suit: 
personal beauty, indomitable courage, backed 
by the substantial recommendations of a house 
ready-built, and fitted for immediate occupation, 
are gifts not to be lightly regarded. 
Throwing herself on her side, the captive lady 
shows her appreciation, and by sundry queer 
contortions declares herself his true and devoted 
spouse. Then the twain return to the nest, into 
which the female at once betakes herself, and 
therein deposits her eggs, emerging when the 
operation is completed by the opposite hole. 
During the time she is in the nest (about six 
minutes) the male swims round and round, butts 
and rubs his nose against it, and altogether 
appears to be in a state of defiant excitement. 
On the female leaving he immediately enters, 
deposits the milt on the eggs, taking his de- 
parture through the backdoor. So far, his 
conduct is strictly proper, but, I am afraid, 
morality in stickleback society is of rather « 
