Fraction - Spiders

Moreover, unlike some of the other insect eaters,

spiders never do the least harm to us or our belongings.

Spiders are not insects, as many people think, nor even nearly related to them.

One can tell the difference almost at a glance,

for a spider always has eight legs and an insect never more than six.

How many spiders are engaged in this work on our behalf?

One authority on spiders

made a census of the spiders in a grass field in the south of England,

and he estimat