Frog’s eggs (called frogspawn) appear in the first stanza as an exciting discovery: “But best of all was the warm thick slobber / Of frogspawn that grew like clotted water” (Lines 8-9). At this point, the speaker doesn’t completely understand what these are or what they mean; instead, they’re natural jewels to be collected which then give way to life. The speaker observes this transformation with the fascinated detachment of a naturalist. At school, they learn more about how these eggs are created and the physical relationship between the two parent frogs. At this point, they take on a new meaning as a symbol of sexuality. This alters the speaker’s relationship with them as they struggle to understand their own sexuality.