22 
PLANTS AND INSECTS 
fact every country in the world has its variety of spiders. They play a 
very large part in the destruction of harmful insects the world over. 
Even in the homes of the city-dwellers they help in ridding the place of 
Common or black spider 
damaging insects which would otherwise annoy the careful housekeeper. 
The common or black spiders destroy no fabric by eating holes into it. 
They harm no plants that are raised for the benefit of man. They harm 
no fruit. And the stories we hear about their harming people by their 
bite are usually almost wholly without truth. The tarantula and the 
