। ॥ ४३७ ॥
In plain words
This whole class of gross bodies — made of the elements, fourfold in kind — taken as one general whole, is the collective, samaṣṭi: because a single act of cognition takes it all in at once.
Close to the Sanskrit
This class of gross bodies, elemental and fourfold, taken generally, would be the aggregate (samaṣṭi), because of its being the object of a single cognition.