[Did William have qualms about bringing an actual spider along on this venture? Of course he did. But Webber was available for this and so William had made him to come along anyways.]

...I would think not. Maybe they just want to collect them. Or else they are a scientist.

[He's filled one jar and is setting it aside in the case he brought with, pulling out an empty jar.]

Besides, I do not think spiders would be a good source of nutrition, so why would anyone bother to catch them like that?