The flying spiders suffer themselves to go that(仅仅是类似冠词的用法,指定作用) way,that（引导后面的同位语从句） they find they can go with the greatest ease,and so where the wind pleases.
The same also holds true of other sorts of flying insects,for at these times,that（引导定语从句,限定前面的insects） I have viewed the spiders with their webs in the air,there has also appeared vast multitudes of flies,and off flying the some way with the spiders and webs directly to the ocean.
差不多是这样 ^-^