Mrs. House-Spider 
This is what she does. She at- 
taches several threads to the beetle’s 
body, then climbing up one of her 
rope ladders, she fastens the threads 
above and waits. ‘The threads dry 
and contract, and the insect is carried 
up a short distance. Again she at- 
taches threads to her prey and fastens 
them higher up than before. She re- 
peats this again and again, and thus 
little by little the beetle is hoisted to 
the desired position. 
I am sure you will agree with me 
that Mrs. Theridion may well be proud 
of her skill as a mechanic. 

