Verse 21

अनेनैताः स्फुरन्तीह विचित्रेन्द्रियपङ्क्तयः ।सर्वगेन निदाघेन यथा मरुमरीचिकाः

In plain words

By this these manifold ranks of the senses flash forth here, as mirages flash forth in the desert through the all-pervading heat of summer.