give an explanation of these lines
'Half-flush that dies along her throat:' such stuff
Was courtesy, she thought, and cause enough
For calling up that spot of joy. She had
A heart -- how shall I say? -- too soon made glad,
Too easily impressed; she liked whate'er
She looked on, and her looks went everywhere.
Sir, 't was all one! My favour at her breast,
The dropping of the daylight in the West,
The bough of cherries some officious fool
Broke in the orchard for her, the white mule ....
The speaker in the poem "My Last Duchess" is presumably the Duke, her husband. Throughout the poem, he expresses his displeasure at the young lady's joy. She finds joy in things like a sunset ("the dropping of the daylight...) and cherries from an orchard. For the Duchess, these were simple things of beauty, and worthy of her joy. It might also be assumed that she is blissfully unaware of the Duke's unhappiness.
The Duke, in turn, appears to harbor some jealously, not only at the "officious fools" who bring her cherries, but also towards innocent symbols of joy such as the sunset. For the Duke, the money and pleasure that he provides her should be the only things that make the Duchess happy.
The fact that these do not take priority in her pleasure drives the Duke to distraction, and he meticulously lists everything that makes her heart glad "too soon" and that calls that "spot of joy" to her cheek. In short, he is jealous and past the verge of letting this jealously get the better of him.
The speaker is the Duke,the king , he has described his duchess.one agent has come with pruposal of countryside princes. Duke reveals his past life with Duchess.She was very beautiful but 'her beauty kills her'. in that stanza he shows her beauty,kindness.Actually Duke feels jealousy because of her kindness,softness of her heart. in first line,""Half-flush that dies along her throat" saya that after her death her smile, sweet voice dies and now no one can see her. we may also say this stanza is monologue.... Duke's voice is tragic.we feel the sympathy for duchess,jealousy of duke and his love for dead duchess.