All year the flax-dam festered in the heart

Of the townland; green and heavy headed

Flax had rotted there, weighted down by huge sods.

Daily it sweltered in the punishing sun.

Bubbles gargled delicately, bluebottles

Wove a strong gauze of sound around the smell.

There were dragonflies, spotted butterflies,

But best of all was the warm thick slobber

Of frogspawn that grew like clotted water

In the shade of the banks. Here, every spring

I would fill jampotfuls of the jellied

Specks to range on window sills at home,

On shelves at school, and wait and watch until

The fattening dots burst, into nimble

Swimming tadpoles. Miss Walls would tell us how

The daddy frog was called a bullfrog

And how he croaked and how the mammy frog

Laid hundreds of little eggs and this was

Frogspawn. You could tell the weather by frogs too

For they were yellow in the sun and brown

In rain.

Then one hot day when fields were rank

With cowdung in the grass the angry frogs

Invaded the flax-dam; I ducked through hedges

To a coarse croaking that I had not heard

Before. The air was thick with a bass chorus.

Right down the dam gross bellied frogs were cocked

On sods; their loose necks pulsed like sails. Some hopped:

The slap and plop were obscene threats. Some sat

Poised like mud grenades, their blunt heads farting.

I sickened, turned, and ran. The great slime kings

Were gathered there for vengeance and I knew

That if I dipped my hand the spawn would clutch it.

Information

The poem is generally about Heaney reflecting on his childhood and the loss of innocence and the realization that there are dark aspects to life. A "naturalist" is an expert or student of natural history. The poem is written in "free-verse" which represents the simplicity of childhood.

flax-dam

Crop grown in Ireland.

punishing sun

Negative imagery that could be hinting at the fact that nature can be unforgiving.

There were dragonflies, spotted butterflies

But best of all was the warm thick slobber

Of frogspawn that grew like clotted water

A positive section that also acts as the volta. No punctuation is used, suggesting breathlessness and excitement.

I would

Pluperfect tense.

On shelves at school, and wait and watch until

Pace slows down.

Miss Walls

He's a child and is exploring nature based on what he has learned at school but finds out there are darker things about it as well. Miss Walls is most likely referring to his teacher.

The daddy frog was called a bullfrog

And how he croaked and how the mammy frog

Laid hundreds of little eggs and this was

Frogspawn. You could tell the weather by frogs too

For they were yellow in the sun and brown

Repeating and reciting what he was taught at school or elsewhere. The terms "daddy frog" and "mammy frog" are quite childish and represent his childhood innocence and purity.

In rain

Turning point or volta of the poem.

Then one hot day

Mimics the narrative of a child, similar to "once upon a time."

Invaded

Could be referring to the Troubles and sectarian violence in Ireland.

cocked

Frightening.

slap and plop

Onomatopoeia.

farting

Childish.